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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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 ()
{
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* *  *** * * ** ***  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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*   * ** ** * ** *  **   *    ***  *** *   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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{
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 **** ** * *** *  *  ** *  ********  * * *   
}

printf( ** **  *  *      a );

* *  ****** ** * ** *   
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 ()
{
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* ** * *    ** * *   ch, s[1000];
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 ***    *     *   * * *   *  *        * * * (ch >= 'A'   *      * * ch <= 'Z')
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** **   **  ***  *** ** * *     * *     if (ch >= 'a' ***    *    ch *   *  * 'z')
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}
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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Case 0: Correct output
Case 1: Correct output
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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;

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 **  * ******  ** ** *     *
  * * ** *** * ** *** *   *** * *    ***** *   *   **
 *** **  *** * ***          *
***    *   * ** *     **  ****    * = '\0';
**  **      ***   ** * * **  ** = i;
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 * **  *    
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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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