1-11 Exercise 1: UPPER and lower letters

0 like 0 dislike
19.2k 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 | 19.2k views

57 Answers

0 like 0 dislike 
Hidden content!
#include "stdio.h"

int main()

{

 * ***     *    ** *      *         * *  * ch[1000]={0};

 *  ** * * **** ****** ***  ** *   *   * * * * i;

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

     *  * *****    *** * ** ** ***   **   * ** * &ch);

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

** **     *   *  * **   ***   ** ***     ** *   **  * *   ***  * ***   && ch[i]<='z')

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

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

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

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

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



}
answered by (-284 points)
0 0
prog.c: In function 'main':
prog.c:11:14: warning: zero-length gnu_printf format string [-Wformat-zero-length]
       printf("");
              ^~
prog.c:13:15: warning: format '%[^
   ' expects argument of type 'char *', but argument 2 has type 'char (*)[1000]' [-Wformat=]
     scanf("%[^\n]", &ch);
               ^
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include <stdio.h>
#include <string.h>
int read_line(char str[], int n)
{
int ch, i = 0;
while ((ch = getchar()) != '\n')
if (i < n)
str[i++] = ch;
str[i] = '\0'; /* terminates string */
return i;
}
int write_line(char str[])
{
*  **   *     *  * *   * **   i=0;
* ******* ** ** ****  ** ***    ****   **** *  ***
    * *   * *** *****   *  **  *** ****  ** ***** *** *  *  * ** ****** ** **     **    *** *   * *  ** 


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

  * *    * ** ** *    ** **     ** 0;
}
answered by (-196 points)
0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include<stdio.h>
#include<string.h>
int main()
{

 ***** **** ** * **** ** i;
* ** ******  *** ***    *** * str1[1000],str2[1000]={0};
*  ****  *** * ** * *     *    ** *     a sentence to convert upper to lower and vice versa\n");
 **** ***** ***    ***   * ** ** ***  *  *
*** **  *  *  **** ** **      * ***  

* ** ** * ** * ***  ***  *  *  *******   *    ** ***  
* * *** *       *   *     * 
**   ***    * ** * *    ***   * *** * *** ** **** ****** ** * *  ***  &&str1[i]<='z')
**   *** *******   *   * * *    *     *           * * **
* *  * ***  *  *   *  *  *   *  ***** *   *** *  ** *****  **  * *  * *  *** ** ** ****  * **** 
* * *      ** **    * ****  *     ****  ***   *  *   *
 *  **   * *  ***  ** **   * ** *  ** *   **  *  ** ***     *   ********* ** *  ** * ****  ***
*  * **  * *    * ******* ***  * *   ***   ** ** *  * ** *** * * **   *****      **** ** ***** 
*   *** *  *   ****      **
***  * *** ****    ** **   ** **
  *****  ********  *** * **       *  *** * *** **** *  * ** * * ** *
   *** *   **  * *    ***   ** 
}
printf("%s",str2);
return 0;
}
answered by (-167 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>
  * ** * ***** **   * *
int main()
{
*  ** *   **   ** **  * * ****   *  S[5000];
   *     ** *  *  * * **  5000, stdin);

  * * ** * *** *** * * ***  ** a,N=strlen(S);  *      *  *   *  ** ** *
  *      *   ** ******  ** * ****   * 
*** * *   * ***     **  **   **  ***  **** * ****** * ***   *** * && S[a]<='z' )  //大小寫轉換
 **    **  ******* *   * **  * *****  **  *   ** ****     ****** *    ***   *** *    *  * ** * * * *
   * * **    *   * ***       *    * *         *    *   if   *  * *  *      **    S[a]<='Z')
**  * *   *   ***   *** *********  * *   **   * ** **** *   *  **** *  ** *    *****  * ** ** **   ***  
**** *****  *  *     **  *  ****   *    *****  * *
* * *   * * **  ** * * *****  ** **  ** * * ***    ** **     * * **    *********      ****  ** ** * * ***

 return 0;
}
answered by (-127 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 read_line(char str[], int n)
{
int ch, i = 0;
while ((ch = getchar()) != '\n')
if (i < n)
str[i++] = ch;
str[i] = '\0'; /* terminates string */
return i;
}
int main()
{
      * ** ** ** * ****   *  str[1000];
** *  *   *        ***     * ** i,a,b;
   * ***  * **** * * *     ****  * *  * *  *** *
  ** ** * ** * *  *       * *  * ***   ****
  * * *   *** ** **  * ******
  *  ****  ** ***** * *** *  * **   ***  * *********   **   *  *******  **** ** *****  ** **
 *   *   *      *  *    *      *** *   **         *  ** *
*   * * *****  *   **** *  * ***    * *      ** ****     ** *    **    **  * *  **** 
**  *** * * *   *  *   ***  **** ***** ***** *** *
**       ** * *  **** **     *  ** ** * *  ** ** *     *  if ** ********* **  ** *  **   *  *** ***
 *** *** *** *  *** *    * **** *  ** *   * * **  **** **   
****  **   * ** *  **  *   * *  * *    * ** *  ** ** **  *** ** ** *****   **   *  ** 
 ***     **    *  ** **  **  *** * **** **  **  ***
 ** * ** **  * **  ** * 
** * *  ***** * ****  *  *  *  **  **
* **   *** ** * ** *** * ******  0;
}
answered by (-196 points)
0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include <stdio.h>
#include <string.h>
int read_line(char str[], int n)
{
int ch, i = 0;
while ((ch = getchar()) != '\n')
if (i < n)
str[i++] = ch;
str[i] = '\0'; /* terminates string */
return i;
}
int main()
{
   ** *      ** ** ** **** str[100];
 ***  ****   *   ******      i,a,b;
  *  *  * * * *      ** * ** ** **   ***   *
* * * *   * ** *  **  ******* *****      **   *  
**** ** * * **  ***   * *
* *   * *** ****  * **    * *     *  *   **  *  * * * *   ** ******* *   ****  ** *  **  **  
 ****  *   * **  * *  *  ** ***** *   **     ** *  *
*** ******   *  **    **  * *  ** *       *    **  * * *** **      ***************   ** 
   * **** * * * * *** *** ****     ** *    *  **  * *
    **  * **** *    * * *  **   ****   ***  *   ***        if  * * **    *      * *** *** * * **
*  **** ** * ****    **   *  ** *** ***    *   * **
**  *** ***   *   * * **  *  ******** *  **  **  ** * ** ** ** *   ** *      *****   *  ** **
**    *  ** **** ***      *  ***** ******  *** ** *  
**** ** **  **** *   *  *  * 
  ** *  ***********  * **  * **  **
*** ** ** ** ***           * *       * 0;
}
answered by (-196 points)
0 0
Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include <stdio.h>
int main()
{
    char a[1000];
    int i;
****  * *   *  * ** * * * ******* 
* *******   ** *  *   ** * **** *    ****
  *  **  *   *   *   * **    * *****  **  * *   ** ** *       * ***    ** * *   ***  * ***  * *  * *
** ****  * *      **  *   *  * **  * ****  **  ** * ****   ** ***   * ******  *  **   ** *
** * *  *    ** * *  **  * * ****   * ** ********    ** * ***  ***    * *  **  ** **  *  *
**  * * **      **     * *  * **  ****    * **** ***  ***   * * *     ***** ****  * * ****  **
     ** ** **  * * * * * ***** * ***
 * *     * *  *      **  * 0;
}
answered by (-284 points)
0 0
prog.c: In function 'main':
prog.c:6:5: warning: 'gets' is deprecated [-Wdeprecated-declarations]
     gets(a);
     ^~~~
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/cckMIBeA.o: In function `main':
prog.c:(.text+0x25): warning: the `gets' function is dangerous and should not be used.
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include <stdio.h>
#include <string.h>

int main()
{
  *  ** *   *   * *     *** *  *  str[100];
    int i,a,b;
**** **   * *     *** ** **    *    *  * *
*  * **     *******  *    ***** * ********   *  ***
    {
* ***** **  *** **    * * * *  *    *  *** * * ****  *    * ****   **  ***  * *****  **   
***  ** ******** ** ***      **    ** * *  * ** * * ** 
  * ******  *   *     * ********* **    ***    * *  * **** *** ***** ** *** ** *  
* ** * ***    *  * *  *   * **  **  **  *******  * *   *
  * **********  ****** ** * *  *  ***   ** ** ***  **   * if  ** ** ***   * *  **   **  **  *    
 * ** * **  * ** * *    *** ***** *  * *   * ** **   
  * ***   *  **    *    *** * *   **** * **  ** ***  *  ** *** ** **    ** ***   *     
 * ** **   *     ***** **  ** * ** * ******* *  ****  **
    }
***   *  *** *    **  *******    
*** **  *** ** *   **** *  ** * **  0;
}
answered by (-196 points)
0 0
prog.c: In function 'main':
prog.c:8:5: warning: 'gets' is deprecated [-Wdeprecated-declarations]
     gets(str);
     ^~~~
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/cc7O3tJu.o: In function `main':
prog.c:(.text+0x23): warning: the `gets' function is dangerous and should not be used.
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include <stdio.h>
int main()
{
    char str[100];
    int i,a,b;
*     *   * * **** ** *   ***   **
**  *     * *    * *    ***** *******  * ***  * **
    {
*  ** * *** *** * * *** **   **      *  **** ****  ***  *   ** *** ****   ** *   * **   *** **
  *   ** * **  * ******   ** *  * * **  **       **
 * *  * **** **   ** * *** * ***  *  ** * *    *  ***** **     *  *****   **  * *   ****  ** 
*    **  * * ** *   *   **  **       * ** **  **  * * * 
** ***  *    ****   * * *  *       *   ** **  *  ** ** ****** if **    ********** * **  *  *      **  *
**  *   ***   * *      * ** * * * *     *  * *** ***   
   **  *** * * * ****   **** * *  ** ** *   * ** ***  **  ** *****  *        ** * *  *  **
  ** *   * ****   *    *  *    *  *  **    * ** * * 
    }
   ****  *  * * * *   ** *** * ***   *
*   **  **       * **  * *** *   0;
}
answered by (-196 points)
0 0
prog.c: In function 'main':
prog.c:6:5: warning: 'gets' is deprecated [-Wdeprecated-declarations]
     gets(str);
     ^~~~
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__;
              ^~~~
prog.c:7:15: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
     for(i=0;i<strlen(str);i++)
               ^~~~~~
prog.c:7:15: warning: incompatible implicit declaration of built-in function 'strlen'
prog.c:7:15: note: include '<string.h>' or provide a declaration of 'strlen'
/tmp/ccX2gnMW.o: In function `main':
prog.c:(.text+0x23): warning: the `gets' function is dangerous and should not be used.
commented by (4.3k points)
0 like 0 dislike 
Hidden content!
#include <stdio.h>
int main()
{
    char str[100];
    int i,a,b;
   *  **  ****  * *  *********  ***  
* ** ***  ****  * * * ****  *  * ** *   *    * 
    {
*****  ******** *       *  * **  ** **  ***      *******  * **  ****   **       ****  *    *   *
 *  * ** *  *  **  * *   ** * ***  *** * * * * *   ***  * 
** *  *  * * ** *  *   * ****  * * * **   *** *******  * **    * ***** *      * ** * **** 
  *** ** *** * ***  *  ** ****     *** ** ****    *           
 ***  ***  * *** ******* * *  **    *    ** *   **** ** if  **  *   * *   **** * * ** * ** * *
***   ** * *    ** **  *   *   * *** **      ** * *** *   *
   *   **  ** * ******  **   * * **** ********  ***     *   **  ****** *  *****   *     
   * **  *   **** * *   * *     ** * * *** * * **   *
    }
 **** * *   **** ****    ** *** 
 **  *  * *  * *   *** * 0;
}
answered by (-196 points)
0 0
prog.c: In function 'main':
prog.c:6:5: warning: 'gets' is deprecated [-Wdeprecated-declarations]
     gets(str);
     ^~~~
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__;
              ^~~~
prog.c:7:15: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
     for(i=0;i<strlen(str);i++)
               ^~~~~~
prog.c:7:15: warning: incompatible implicit declaration of built-in function 'strlen'
prog.c:7:15: note: include '<string.h>' or provide a declaration of 'strlen'
/tmp/ccxAMu40.o: In function `main':
prog.c:(.text+0x23): warning: the `gets' function is dangerous and should not be used.
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 | 13.1k 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 | 12.5k views
12,783 questions
183,442 answers
172,219 comments
4,824 users