1-11 Exercise 1: UPPER and lower letters

0 like 0 dislike
19.9k views

Write a program that reads strings of up to 1000 characters continuously and displays them, after replacing the lower letters with upper letters and vice versa.

寫一個程式 輸入一個字串(最多1000)  把小寫轉大寫大寫轉小寫

Example input:

With the rise in GLOBAL warming and increasing POLLUTION levels, it is becoming essential to find a viable alternative to the internal combustion engine petrol powered CAR.

Example output:

wITH THE RISE IN global WARMING AND INCREASING pollution LEVELS, IT IS BECOMING ESSENTIAL TO FIND A VIABLE ALTERNATIVE TO THE INTERNAL COMBUSTION ENGINE PETROL POWERED car.
[Exercise] Coding (C) - asked in Chapter 13: Strings
ID: 41431 - Available when: Unlimited - Due to: Unlimited
edited by | 19.9k views

57 Answers

0 like 0 dislike 
Hidden content!
#include<stdio.h>
#include<string.h>
int main()
{
    int i;
    char a[1000];
* ** *      *  * *  *   *      * **   *** * **  *** **
    for(i=0;i<strlen(a);i++)
     **    ***** * ** *  *****  ****   ******  * * *       
 ****  *  ** *   **  **  * **     ** * ** **   * * *  ***  *** *  * *   **    **   * * * **  * *    && a[i]<='z')
  *    ** ***  **  **  ** *  **  *  ******  * * *    ** ** * * ****  **** *   *    *  ** ****** * * ** *  **** ***
     *      * *   *** **** ** * * *** * * * *** ** **  *  ***   ******  **  *   *   **   *  *   *** *  * * *  *** ** ****    **    *****   ** **
  *  *  ** *    *  **   *   **     ******** *  **   *  ***** ** **  *  ******* *      * *  ****** *     *  *
* *   **      *  * *  * ** ** **** ** ** ** *** *** ***  **    * *****   ** * * **** if(a[i]>='A' && a[i]<='Z')
 *  *  * *  * * ********   ******  *  * *  ** *        * ** *   * ***** ***   **         *        **  *** ** 
*** * *   *    ** * * *  *** *   ****  *    *      **    ** *  ****  **  *    *   *****  *** *  * *** *      ****  * * **  * *  * **** ******** 
** * *   **** *  * **    ** *   *    *  *** * * ****** *   **  ***   **     *   **   * * *  *  **** *    **
 **   * ** ** *  * * * ***** **   * * * ** *  *** 
* * ** ***  *  ******* ** ***  *  **  *** ****** *** * * *  *    *
}
answered by (-301 points)
0 0
prog.c: In function 'main':
prog.c:7:13: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[1000]' [-Wformat=]
     scanf("%s",&a);
             ^
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include<stdio.h>
#include<string.h>
int main()
{
    char a[1000];
 *  **  ** * ** *   *  * *** ** 
    int i=0,l1;
*  * *   * *** ***    ***  * **  * *   * **
  *   ** **  * ** *   * ** *    *  *    ****** 
  ** *   *  *   ***** **   **  **     ** *     *   ***** *  *** ** * * ** * * *  *****  * 
    *   *** **  *  *   * ** ** *  *   * *  ***   * ***  
  *** ****  *   * *  *  * * ***  *  *** **  ****  ** ***  ******  *    **  *
**    *     *  *  * * * * **  *            **  *** * *   ***
 *****  **   *    * ** **  *** * * *   ** * **    **  * if(a[i]>96&&a[i]<123){
 * ******** ****    * * * ****  * *  **  ***    * * * ***
***  ** * ***  * **   *****  **  * * ***  ***       ***   *  ** *   **  **    *
** * *** *  ****   *  ***** ***  * * ***    * ***   
 ******   * **   *****  * * *  *    ****   *  *     
***  *** * *** ***  **  ****    * ***   **    **     **   * ** *  *  * ***  **** *** *** *** *
**   *    **  *  * * * **   *  * * * ** *  * * *  *
    }

}
answered by (-329 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include<stdio.h>
#include<string.h>
int main()
{
* **    ***  *  *     **  ****  string[1000];
** **** ** *  ** ** *  *    * i=0;
********* * ********     *   * *********
 * *   ******* ** **   ** * ******   *** ** ** *
    {
 *  ****  ******* ** * *  **  ***   **  ** ***  * ******   **** *   && string[i]<='z')

*       *  *    ****  * *** ****  ****    **  * * ***  ***     *** **** *** ***   ** **** *   *  **

****** * * *** ** *   *** *  ******  * **   ** * ** * if(string[i]>='A' && string[i]<='Z')

*  * *  * * * *  *     ** **  ***** *    **  * ** *  **  *******    *** ***** **** * *   = string[i] + 32;

  *** * ** * *   ** ** **** *** *      **   **  *   *

 * ** * ** * *  **  ** **
** *  ** *   *     * * *  *         *  *   *   
*** * ***    ** ******   ***   * * 
 *  *  **      * * ** **** * ****    * *  *****
*** *    * * * *   **  
   * ******   **  ** * *  **** * ** *****   **  **
***   *  * *  *** ** ***  0;
}
answered by (-323 points)
edited by
0 0
prog.c: In function 'main':
prog.c:7:5: warning: 'gets' is deprecated [-Wdeprecated-declarations]
     gets(string);
     ^~~~
In file included from prog.c:1:0:
/usr/include/stdio.h:640:14: note: declared here
 extern char *gets (char *__s) __wur __attribute_deprecated__;
              ^~~~
/tmp/ccuYke74.o: In function `main':
prog.c:(.text+0x2f): warning: the `gets' function is dangerous and should not be used.
commented by (4.3k points)
0 0
prog.c: In function 'main':
prog.c:21:15: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
     for(i=0;i<strlen(string);i++)
               ^~~~~~
prog.c:21:15: warning: incompatible implicit declaration of built-in function 'strlen'
prog.c:21:15: note: include '<string.h>' or provide a declaration of 'strlen'
commented by (4.3k points)
0 0
prog.c: In function 'main':
prog.c:21:15: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
     for(i=0;i<strlen(string);i++){
               ^~~~~~
prog.c:21:15: warning: incompatible implicit declaration of built-in function 'strlen'
prog.c:21:15: note: include '<string.h>' or provide a declaration of 'strlen'
commented by (4.3k points)
0 0
prog.c: In function 'main':
prog.c:21:15: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
     for(i=0;i<strlen(string);i++)
               ^~~~~~
prog.c:21:15: warning: incompatible implicit declaration of built-in function 'strlen'
prog.c:21:15: note: include '<string.h>' or provide a declaration of 'strlen'
prog.c:24:5: error: expected '}' before 'else'
     else
     ^~~~
prog.c: At top level:
prog.c:26:5: error: expected identifier or '(' before 'return'
     return 0;
     ^~~~~~
prog.c:27:1: error: expected identifier or '(' before '}' token
 }
 ^
commented by (4.3k points)
0 0
prog.c: In function 'main':
prog.c:24:5: error: expected '}' before 'else'
     else
     ^~~~
prog.c: At top level:
prog.c:26:5: error: expected identifier or '(' before 'return'
     return 0;
     ^~~~~~
prog.c:27:1: error: expected identifier or '(' before '}' token
 }
 ^
commented by (4.3k points)
0 0
prog.c: In function 'main':
prog.c:21:15: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
     for(i=0;i<strlen(string);i++)
               ^~~~~~
prog.c:21:15: warning: incompatible implicit declaration of built-in function 'strlen'
prog.c:21:15: note: include '<string.h>' or provide a declaration of 'strlen'
commented by (4.3k points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include<stdio.h>
**** * ***** *    *  ** *
int main(void)
{
 **  * ** *  ***  **  ***   str[1000];
  * * ** *     **  **  * ** **** i,temp;
* * * *    **   * ******* ******* *  * *  
   *  *    * * * *      * * * *   ** n = strlen(str);
 **  **** ** *** ** *  *    *  ** **
**  *** *** * ****     
*  ** ***** * **** * * ** **  ** ** * *  * ** ** ***  ** **** * *** && str[i] <= 'z')
**  **** ****  ** *  **   **  *** ** * * ***    **  ***** **  **     *** * * **  *  *
** **     * ***  **  * *** **** * *     **  * * * **** * **** ** if(str[i]>='A' && str[i] <= 'Z')
***   *   ***     * *  * *    *********  **    **   *   * * * ** * ** ***  ** ***  * *
  *   ***  *  *     *   * ** * * ***      ** **  *** * * *  
   *    *   *******     **   ***
 * *     * ** ****      ***   * *** *** *** ***** * 0;
}
answered by (-281 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int main()
{
*** ***   ** ** *** *    * *  ***** array[1000]={0};

*    *    * *   *     *        i = 0;

* * **    * *** ****  * *** * ** ***  *  1000, stdin);

     ***   *  *   *  ** *  ***  *   * len = strlen(array);

       * *   ** **   *    **  = 0; i < len; i++)
*** *******  ***  *** *** **   
*  ***  *  ****  ****     * * ** **  * ***  ***  **** *   >=    ******** *     *** * <= 'Z'))
 ******* ** *     *   ** * *  *  ** ** ***     ***
** *** ***  *     **** *  * *  **   *  ** *  * ** *     ***   *** ***  *   * ****** * ***** * += 32;
***   *    *** **** * *********  * * * *** * *** * ** *
 * ** ***  ***   * ***  *    ******  **    *  ***   ** if ((array[i] >=  * **  * ** ***   **  * * <= 'z'))
   ***   **   ***    * *  *     **    *    *     **  *   ***  * 
**  ** **     *   * **** ** *** * * *   ***  * *** ** *****  *   ** * ***** * -= 32;
   *    *   ** * **   *   **  *** ** **      * *   * *** *
   * **** ** **** *      *     *  *     ** ****** **** ***  ** ** ** ** **  * ****
 * *  **     * ** **   **
  * * ***   ***** * ***** * ****  * 0;
}
answered by (-284 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int main()
{
**  *  **  * ** **   **** **  array[1000]={0};

 * ** * *** *     *    **** **   i = 0;

* * ** **  *  ** *  **  *  * *** * * *    1000, stdin);

* ***  *   * *** *  * * **  *** ** len = strlen(array);

*  *  *  * * *    **     * = 0; i < len; i++)
 **  **   ***** ** * *   *
*        ** *** *  * * * ** ** * ***       *  ***  *** ** * ** **** >= * *    *   *    <= 'Z'))
 ******  *** *  *  *   ***    **** *** *  * * ** *   *  * *** 
**   ****  ***  **  ****** ** ** ***    * *  * ** **  * *  * ****** ***    ***  **  += 32;
* *  ** ****      * *   **** *   * *   **  *    ****
*  **    *  * *   *** ** ***  *  ** ** * **     ** if ((array[i] >=   * * **  * *** *** <= 'z'))
    ****  * * *  **    ****  ****** ** **  *   *
 * **   *** * **  * ******  *   ***   ** *** * *** *   ** ** * * * **    * ** *      -= 32;
    ** * ** * ******    *    **  *** * ***  *   **    ***  *
 *    *** *** *  **   * *****    * * *** ****   *  ** ******** **  * *      
** *** * * *   ** * * * *  * 
   **   * *   *****    ***   * *  * 0;
}
answered by (-108 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include <stdio.h>
#include <studlib.h>
#include <string.h>

int main()
{
 ** * *    ****   *    ** 
* * *  **  * *  *   *   **   array[1000]={0};
    ** *    *  *****    ****** * * i = 0;
** **  **** ***  ***   * ******* *** ** 1000, stdin);
**** * *    *** *   **   len = strlen(array);
**   * ***      *  ***     *    **  i<len; i++) 
*****  **  **  * ***** *
   **   *  *  **** ** **  * ** *  *   *  *** *** * *   
* ** ** * * *  * * ***  ***** **** * ** ****  *****  * * *  >= ***** * * ** *  *  *  <= 'Z'))
 * *** * *       * *      * **  ***    * **** ****  * 
  *  *** ***  ** * *      *  * ***  *** **  * *****  * *    ***  * * ** * * **      ** += 32;
  *    * * ***   **       **   *   **** ****   ** **
**     *** *    * *  *  *  **  * *  **  ** *   *** **     *
*   * *   * **  *****  * *** ***  * * *** **** *****  * *  * if((array[i] >= 'a')&&(array[i] <= 'z'))
 ** *   *** ** ***  *   *  *          ***    
***    **  ** *  ***** *   ** *    * * ********  *   ***   *** ** * *   *** ******  -= 32;
  *** ** ****  **    *** * ****  ** * * **    *  *  ***  
*  *    * **   *  **  * *  ******    *  * ****  ***** **** *** ** *** *
 **  *   **   *****     *****
   *    * *  ***     ***   * *  0;
}
answered by (-284 points)
0 0
prog.c:2:21: fatal error: studlib.h: No such file or directory
 #include <studlib.h>
                     ^
compilation terminated.
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include <stdio.h>
#include <string.h>

int main(){
   ***  *  ***  *  *      str1[1000];
**** * ** * **   **  *** a,b,c,d;
* ****  **  **   * ***  * *    *    * *  *
 * * ******  *     *** * *  ** * *
*  ***** *** ***  ** ****  *  **** ** *  *
*   ** ***  * ***** * **** ******  *   * * *    * * *  * **     * * * &&str1[a]<='Z')
*** *  ****  ****  *     *  * **        * ***   ** *****  *  * **  **    *****   ** *  * *
 *        *  *  **         ** ** * **      *   *   *   **   *  **  ***  ** *   **** **     * ***  *
*** * **  ***   ***** *   *  *********** **** * *** **  **  **  *  *  *    *   **  ** 
    }
*** *********** ****  ** *  **  **  **    *    *   *** **   * 
     *  ***     * *   * **  **  * 0;
}
answered by (-498 points)
edited by
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
commented by (4.3k points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include <stdio.h>
#include <string.h>

int main()
{
  ** ***   *  * *  *     * ** * str[1000];
    int i;
* *  * ****   **  **  *  ***  ***  * ** *   **
   ******       * ***   **** ****   *  ****  ****
    {
    ** ** **  *** * * * * **   *      * *** ** *  ********* *      **    **   *** **
* *   ** *   ******* * *    ****** ** ***    **
  * *         * *   ** ** *** *** ** **   ** **  **   ****  * ***** *****  * ******** * *
*     * *** **    * *** *  ***   *****    *         
*  **   *   * **   ** *   *  **  * *  ** * *    *  *   *     if *      *****  ** **    *   *  **** ***
 *     ***  *    ** ***  ** * * **** *****  * * *** **  
*   **   **   * * ** *  *****   * *        *    ***  * ****  *  *  ***   * *   ***  *** ****
***  ****** ***  ****   * *** * * ****  *** **** **    *
    }
**  * **  **  ****      **  ****     *  ** **  ** 

*     * ***    *******  * * *       0;
}
answered by (-196 points)
0 0
Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include<stdio.h>
#include<string.h>
int main()
{
    char a[1000],b[1000];
    int i,j,len;
  *  * **  ***  ** * * * *****  ** *** * *  **  * * 
    {
     *  ** *     * ****  ** ***   ***  *        *  *** *
    }
    * * **   **  * *****    *  *    *
     *   ***   ***  *  * *    * * ***   
  * *****    * ******   *******   ** ** *  
    {
   ***** * *   ***     *** ** * ** *    *   *    *     * ****  * ** *
   * * ***   ** ** *     ****** * ** * ** * *  ** * ** * *
 *           *   **   ***     *   * *****  *  **  ****  *    ** * *  *  **        ****  *  
 *   **** *** ** * * *** *   * * ** **   ***  * * ***  * ** *  *** ** **  * * ** ** *
    * ***  ** **    *  **    *  **   ***** ***     *      * *    **     **  * ***** **   ** * ****     **** *  *  
* **  *****     *  ***  **     **   **** *      *  * * ***    *  *****  
**  ****   **** *  *  **  *   **   ***** **     **** **** *   *  * *  **** ** if(a[i]==97+j)
 *    ***   **  ** ** ** ***     ***** **** **   ** ***  *** *  ***  *     *    * 
         *****  ** ***    **    ***  * * ** * ***** *** * * *** **   *    ** *  *** * *       *   ** *   *    **
 **  * *  ***  * ** *  *  *   *  ******  ** **** ** *** * *** ***  ***  ****  **
  ** **    *  ** ****  ** *  *** **  * **   ** *    *
*  *  *** * *   **    **    *  *    ** **** *   *   * *****   *  * ** * *
    }
}
answered by (-255 points)
0 0
prog.c: In function 'main':
prog.c:11:9: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
     len=strlen(a);
         ^~~~~~
prog.c:11:9: warning: incompatible implicit declaration of built-in function 'strlen'
prog.c:11:9: note: include '<string.h>' or provide a declaration of 'strlen'
commented by (4.3k points)
0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
commented by (4.3k points)
Page:
Welcome to Peer-Interaction Programming Learning System (PIPLS) LTLab, National DongHwa University
English 中文 Tiếng Việt
IP:104.23.197.65
©2016-2026

Related questions

0 like 0 dislike
27 answers
1-11 Exercise 3: Prefix of a string
[Exercise] Coding (C) - asked Jan 11, 2018 in Chapter 13: Strings by thopd (12.1k points)
ID: 41439 - Available when: Unlimited - Due to: Unlimited | 13.8k views
0 like 0 dislike
29 answers
1-11 Exercise 2: Reverse a sentence
[Exercise] Coding (C) - asked Jan 11, 2018 in Chapter 13: Strings by thopd (12.1k points)
ID: 41436 - Available when: Unlimited - Due to: Unlimited | 12.9k views
12,783 questions
183,442 answers
172,219 comments
4,824 users