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

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* ** ***  * * *  **   **  ***      *** ***     ******  ****
}

printf(  *  *      * * a );

***** * ***   ***   
return 0;
}
answered by (-32 points)
edited by
0 0
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);

**** **      * *  ** (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;
**  ***     * * * *  *** *  *** *** ** *   
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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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 ** * **  ** * *    ****     *  *      ** **   *  *
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***  *  **   ****     ***    * *  = '\0';
 ***** ***  *   **    ***     ** = i;
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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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 *  * * ** *  *  * *     **  ** * *  ** **    *  * ** ** 
  *** * ******* *  ******* *     * *   *   ****** ******   ** ***     *   ** 
}
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