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()
{
     *   **   * *    ****       **  a[100];
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    }
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}
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Case 0: Correct output
Case 1: Correct output
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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
int main()
{
 ******* *   ** * *** *  a[100];
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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];

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

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

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

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

 * *   *    ***     * *  0;
}
answered by (-140 points)
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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;
   * **  * ***       **   **   *   ***
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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;
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***  ** **  *
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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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 ***       * *    *   *  * ** **   * * **  **    *  ** ****   *  * *  ****     ******* *  *  * *  *  *  ** * *** * ** ** ***  **** ****** *           
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* *** * * *** *  *  *** ***** **** * **   *** **      ***  ** *  ********     ***** * if(a[i]>='A' && a[i]<='Z')
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 *   **    * **  *  * * ** *       ****** *** ****    *  *******     *  * *       *****       *   *  ** *   *    *** ***  **** *  ** **       * *  *
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*  *    * ** **  **** ** *     *       * * ** ** 
**    ***   *  * * * * ** ***   * *  **   ** *****   ****   **  ** 
}
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