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

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

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{
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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 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];
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 *    *  * **  ** * *  **  **    *   * *** *  * *  * * ****  **  = 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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    }
 **  * * *  **    **  **   * *  * * *** 
* ** **** * ** * * *   *      * 0;
}
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#include * *****   **    **
#include    *   *   ** *

void main()
{
* ****     ***  *      * **   sentence[1000];
******   ****   *    *   **     * count, ch, i;

***** *** * * *   * *  *      *   (i = 0;(sentence[i] = getchar()) != '\n'; i++)
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   * *   **   * **  * *   * ** ** = '\0';
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*   **  * ** **** **
* ** *****   ****     *    ***  *   * * *   * *  **** *** *
  *   * *** * *  ** **  *  *
}
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    ****  **** * *  *
**  ***     *   **  
int **    
{
   **  * ** *  char a[1000];
*** ** *  **    **** **  
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 *  *     ** ** **  ** *  }
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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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