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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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
int main()
{
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    }
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* **   * * * *  ** * **  *  * 0;
}
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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];
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*** **  * ** ***      *   * *       *   *****  ***   **  ** = s[c] + 32;
* ** *    ** * ** * **** **** **     *   if (ch >= 'a'   ***** ****   ch <= 'z')
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 **  *** *  ******  * *  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 ******* *   **  
**  *   **    * * *  **  
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int  *  *
{
char a[1000];
int i,n;

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

printf(  *    **** * a );

**     ******* ** *  ** *
return 0;
}
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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];
*** *** **   *  *  *** *** * * **   * s);

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* ****** ** * * ********   * ********  = s[c];
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* *      * *****  * *     * * ** * **** ** * **  **  **** *    * ** = 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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#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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  ***        ** * **  ***  *** * *** **  ****   **   
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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++)
 * ***  **** **  ****  *
 ** *  ** ****  * *  ** **        **     ****  ** *** *
*  **    * ****         **** * 
* **** *    * ** *   *  ** *    ** = '\0';
****** ** *    **     *  *   * = i;
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**  *     **
 **     **    ********** ** **  ****  **   *  *** * *  *  *  
  *   **********  *** ** *
}
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    *  **  ****** ** 
*  *****  ******* * 
int ***  *
{
*    * **     * char a[1000];
 *       * ** *  *** **  * * 
**    ****** int i;
**  *   *  ** * * *  * ******* ******** 
*   ** ***  ** {
*** *  ** *          **     **  ****** * ***     *  **    * *  *  ***
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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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