1-11 Exercise 1: UPPER and lower letters

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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
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57 Answers

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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
int main()
{
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    }
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}
answered by (-140 points)
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Case 1: Correct output
Case 2: Correct output
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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
int main()
{
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    }
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}
answered by (-140 points)
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prog.c: In function 'main':
prog.c:13:28: error: expected expression before '[' token
         else if(a[i]>='A'&&[i]<'Z')
                            ^
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#include  ****** ** **  

int main ()
{
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**   **** *      *  **  * *  ch, s[1000];

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* ****  *** *  *    *  (s[c] != '\0') {
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*   *  * ** ** ** ** * ** **   *** *   * *  (ch >= 'A' *    * * ** ch <= 'Z')
***   **** ******  ***    **  * *  **     ****** ** **** *   = s[c] + 32;
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}
answered by (16 points)
0 0
prog.c: In function 'main':
prog.c:9:4: warning: 'gets' is deprecated [-Wdeprecated-declarations]
    gets(s);
    ^~~~
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/cckJajTZ.o: In function `main':
prog.c:(.text+0x3b): warning: the `gets' function is dangerous and should not be used.
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#include  * *** *  *   
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int * * *
{
char a[1000];
int i,n;

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}

printf(  ***   ****   * a );

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return 0;
}
answered by (-32 points)
edited by
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prog.c: In function 'main':
prog.c:10:1: 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__;
              ^~~~
prog.c:11:3: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
 n=strlen(a);
   ^~~~~~
prog.c:11:3: warning: incompatible implicit declaration of built-in function 'strlen'
prog.c:11:3: note: include '<string.h>' or provide a declaration of 'strlen'
/tmp/ccbGRkOb.o: In function `main':
prog.c:(.text+0x25): warning: the `gets' function is dangerous and should not be used.
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prog.c: In function 'main':
prog.c:11:3: warning: implicit declaration of function 'strlen' [-Wimplicit-function-declaration]
 n=strlen(a);
   ^~~~~~
prog.c:11:3: warning: incompatible implicit declaration of built-in function 'strlen'
prog.c:11:3: note: include '<string.h>' or provide a declaration of 'strlen'
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Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
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#include ****  ** *   *

int main ()
{
* *  * * ** * *    * *   c = 0;
** *** *  *  *****  *  *** ch, s[1000];
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  * ***  *      **      (s[c] != '\0') {
 * *  ** ****  * *     * * ** **** * ***** = s[c];
   ****  ** *  * ** * **     **      **  *  (ch >= 'A'    * ***   ch <= 'Z')
*   ** * *   *   *  ** **  **   * *** *** ** * ** *  * **  *** *** = s[c] + 32;
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*** *       *  ****** * * ** *** **  *  ** s);

  * *     *    **   ***  0;
}
answered by (-140 points)
edited by
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/ccEVmRzQ.o: In function `main':
prog.c:(.text+0x30): 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:7:4: warning: 'gets' is deprecated [-Wdeprecated-declarations]
    gets(s);
    ^~~~
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/ccYGFu22.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:7:12: warning: format '%s' expects argument of type 'char *', but argument 2 has type 'char (*)[1000]' [-Wformat=]
    scanf("%s", &s);
            ^
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Case 1: Wrong output
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Hidden content!
#include<stdio.h>
#include<stdlib.h>
#include<string.h>

int main()
{
*  * ****  * *  *   **     * a[1000];

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    }

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

**** * **  *  *  ** ****  ****   * 0;
}
answered by (-16 points)
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#include <stdio.h>
int main()
{
* **   *** ****   ** **        *    a[1000];
* ***   * ****  *   **     * *  *****  i=0;
** ***  **  * ** ** ***     *  ** *****
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    {
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    }
*       ** **  **  **  **   *  *      *** *  
****   **   ****  ***      *  *   0;
}
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#include **   * ***    
#include *   * * *   ***   

void main()
{
****   *  *   ***      * * * ** sentence[1000];
**    **   * * *   *  *    *  count, ch, i;

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* ** ***  *** *** *   *     ** *  
** **  *   *   *  *  ** **  * = '\0';
***  ***     * * **** *  ** = i;
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   *   * * * 
** * *     ** *  ***  * ***********  ***  ** **   * ** * 
**    *   ** ******* *  * *
}
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* ****  * *** * * *
  ** ** *  * *****  ** *
int **    
{
*     * * ***  char a[1000];
 *** ** **     **** *  
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** ***   ********   ***  ***    * ***      ** ** ** **** *
 **   * *** *  * * * ***   }
  *   **  * ** }
*     *       **   ****    **  * ** ** *
}
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#include<stdio.h>
#include<string.h>
int main()
{
    int i;
    char a[1000];
    fgets(a,1000,stdin);
**  * * **   * * ***  ****  *  **** * *** *    
*   * ***** * **  *   ***     *  ** * * * *  ** ***   
**  * ** ** * ******** *   ** * ** ** *     * ***    *  *  ** * **   ***    *  *** ** * * **     * && a[i]<='z')
*** * ***  * ****   **   *   ** * **  **  **       ***  *   *** *   *** *  *   ** *   ** ***** *   **  *  *******  ***
* *  **  *  *** **       *  ** *   ** *   *      * * ****   * **********   *  *   **   ** **** **** ** **   **  **  * * *  ** *   ***  *   * *** 
**  * *  ******      ** **   *    *  *       ** * ****         * ** *       ****  * * *    * * * * ** *** *  
***       *   *   * * **  **   ****  *  *** **    * * ** * * *** * *  ***    *****   *  if(a[i]>='A' && a[i]<='Z')
 ****  ** **   ***  *          *     * **   ** ****    ****  ***   **      ** **  * *  ****** ** * ***  ** ***   
***   *  ** ** *   *   **  ***  *   ** * * **  *  **** *  **  *  *   *   ** *** ** **** ***  *  **  ** **  *    *    **** *     * *  *   **  * **    *  
   *   ******   **  *  *  *   *  * * *   **   **  ** ** ***   ****** ** **  ********   * **  ***  * * **** 
* ***     **   *****  ** ** **** * *  *    ** * **  **
*  **  * **      *  * * * **  *   **  * **  *    *     *    * ** * * 
}
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