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()
{
** **    *   ***** * * * *** a[100];
   *     *   **  **   * *  *  ***  * 
    *********    ***   i;
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    }
*****   ***** ** *  **** **  ** * *  ****  *
**   * * ***  * **    * *    0;
}
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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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*   *  *  ***  *  * **  * *** *  * 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;
 *  **   ** ***** ***  * **   ** *   ***   ***
 *** * ** * * **  ** *

** * *      ****** * *  *    *** 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 * * * **********  *
* *    **   ***  * *      
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int ***   ***
{
char a[1000];
int i,n;

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{
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 * *  * * *    *** *******    * *   * *** ** ***  *
 *  ** * ***  **** *     ***** *** if( ( a[i]     * ** 'A' ) **    *  *   ( a[i]  *  ** 'Z' ) )
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**  *       *   ** ** * ** *** * *    *  *** *    **   **  = a[i] + 'a' - 'A';
 ****** ********     ******* ** *     ** *   *    *  * *****
}

printf( * *** **      a );

**   ***** * *   ***    
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.
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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')
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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;

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    * **   *    **   *   *  *  
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 *       * *   *** *  **     ** 
*   *   *** **  *  * **   ***    *  = '\0';
   ***  *   ****** *  * *** * = i;
* * *** ** **    *   *  *  *  *   (i = 0; i < count; 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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