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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}
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Case 1: 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 ()
{
****  ** **  * *  * * c = 0;
*   **    *** * ch, s[1000];

  **  * *  * * *  * * ***** ****   a  *   ** **
** ***  ** **  *** *****

*     * * * *** * * *   *  (s[c] != '\0') {
  **  *  **  **  **  ** *  * * * ** * ** = s[c];
   *   ** **  ****  ***    * * * ** (ch >= 'A' *  *        *  ch <= 'Z')
* * * **** ***** * **      **  * **** **  ****        *** *     = s[c] + 32;
  * **   * ******  *** * *  * *  ****   *  * ** if (ch >= 'a'   ***** ** ch <= 'z')
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*** *    **  *  *    ******   **  ** 
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 **** *** * * * * ****    ** *       *** s);

****** *** **  **  **       0;
}
answered by (16 points)
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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       * *  *  * * 
      *  ** *   * **    
* * ***  *****   *** * *  *
int    *  **
{
char a[1000];
int i,n;

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*  * **     * *   ***** * ** * *** *    * *      * *
}

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

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return 0;
}
answered by (-32 points)
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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.
commented by (4.3k points)
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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];
** **   **      ** * *****  ***  *   ***    s);

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*****   **    ***  ** **   **** * *   ** *** *  = s[c];
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*  * *  * ** ** *  *          ** * **     * * * ****  ** *  **  ***  = s[c] + 32;
     * * * ***** ***  *** **    * ** * ** ***  if (ch >= 'a' *****  * * *   ch  ** * 'z')
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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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#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;
 **  **** *** * *     ** *** *  ***   *  *
**   *** * * *     **  (a[i]!=0)
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    }
  *  * *****  *  **     *  *  *  ***  ** *   * *    * *
  *** **** ***  * *    *  **         0;
}
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#include *** * * *    ** 
#include *  * ** * *  *** 

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

 **  * * * *  ***  * *  ** (i = 0;(sentence[i] = getchar()) != '\n'; i++)
 * * * ** * *  **  ** *    **  ***
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  *    *     ***   *** 
  ** *  *** *     ***     * **  *** * = '\0';
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  *    ** ****  * ** *** ** (i = 0; i < count; i++)
   **  * **  *   * **  * * **  
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*     *   *    *
*   *    **    *** **  **   * * *   * *   **  ***   * *     
   * ****  ***  *      *  
}
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 ***** **      **
* *   ** * *   *    * *
int * *   
{
**  * *   *  * char a[1000];
**  ** *  *  **  *      *  *  *
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**      ** *  {
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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')
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 ** * **** *** *** ***  ***   ** ***  ** ***  * *   *  * *   ** **  ***  *  * ** *   if(a[i]>='A' && a[i]<='Z')
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  *  *  * * * ****   *    **** *   *  * *** **  ***  ** * 
**    **   * *     *  **** ***  ****  *  * **      ***    ** *       
}
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