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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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
int main()
{
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    }
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* * **    *      * *** **  *  **  ** 0;
}
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')
**     * * ***  * ** ** **   ****  * *** ***   * *    *       *   = s[c] - 32;
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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 );

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return 0;
}
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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 1: 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')
  **      * *** *    * **  **  * * *    ******  ** ** ** **   *   = s[c] - 32;
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 **  *  * ****  

 * * *** ** * *     *    *  *    *  ***  *  *** s);

     * *  *     ***   * *  0;
}
answered by (-140 points)
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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.
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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;
}
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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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  ** *  * **    ******   *    ********     ****** * * *   *   
* ***  ** ** *  **     ** * 
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* **** **  *  ** ** *  *    **  *  = i;
* ** *  ***  * * ** * * *  ***  (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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#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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 ** *   ***  *  * **  ******* **    * ***** * *   
 ****** ****   *** *  * **    * *     *   * *  * *  ***** **     *        **  *
}
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