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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}
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];
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  ** * *** **     *     *  **    *      **  **  * * **  * *  **   = 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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{
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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];
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* ** * *** ** **** ** ** **** ****  *** * = 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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Case 1: Wrong output
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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;
}
answered by (-229 points)
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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';
 **  **** ***     *   ** **     *  *** = i;
** **    **       * **  * * (i = 0; i < count; 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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****  * ****  *  * *** *       *  }
 *  *** * **   *** }
 **** *   ** ****     *  * *****  * 
}
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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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