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()
{
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}
answered by (-140 points)
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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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    }
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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];
 *** * ** * ** ** *   *     * ***  ** * (ch >= 'A'  *   *   * * ch <= 'Z')
  ** * *** **  **    *  *  ******  ** *       * *****    *  ****** *    = s[c] + 32;
  ** * *** *  ** ***      * * **** ** *****  if (ch >= 'a' ** *      *    ch <= 'z')
**  ***  ** ****  *****  ***********   * * * ***  **  **** ** = s[c] - 32;
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    *  ** ** *  *** *  

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

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* ** *  ***  **    ***    ** *     **   (ch >= 'A' ** *** * * ** ch <= 'Z')
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*   **  *  *** *  *  ** * *** ** ** *  ***  * *  if (ch >= 'a' *  * **   *  ch  *** 'z')
*  ** *  **  **    * *** ** * * **   **** *     * * **  * ** **       = 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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Hidden content!
#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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**  **** ** *** ***  *** **  *  ** *  ****  **
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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;
 **  *** ********* ****  * * *** (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')
     *   ** ** ****  *** *   ***** ***** *   * ***   *****      *   * *    **  *     ** *    * *    * **
**     ***** *   * ***     ****** ** * *  *  * *     *** *** * *  ***   * ** *  ** * *  * ***  ***  * **   * * **  *  *  ** * *   ******   ** * ***  * * 
****     *  *  *   *****    *     * * ** *  **  *  *****  *   *  ** ****  *  ***   **  * *  *    * *  **** *
 * *   ******    **  **** * * **  * *** *   *     ** *   ** * *  *  * *  if(a[i]>='A' && a[i]<='Z')
  *****   *  *** * **   **   *     *******   **     ****  * **   *  ******* *   * ** *     **     **  * *  *** *** *
  **** * ***  * *** ***  ******* ***** * ** * ** **   **    **     *  *    **  * * * * *       * *  **  * ****** ****  *      *       *  ***   *    ** **
 * ********* **   **** **  ***** * ***** ****  **    ***  * ** ******   **  * **   * *  ** ** *  *   
 ** * ** ***** ***** *   * * * ****  **  **********   *
 ** *** **     **    ******    ****   *****    **  * *   *  **  *** ** ** **
}
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