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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Case 0: Correct output
Case 1: Correct output
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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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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];

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  * *      * * *  ***   ***

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

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}

printf(   ** *** * *  ** a );

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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)
0 0
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'
commented by (4.3k points)
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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] != '\0') {
    *** ** * *    * *   *         ** *    = s[c];
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*      *  **** *** **  **   *   * **  ** *      if (ch >= 'a'   * ***     ch **** *  * 'z')
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* *  ** *   *  * *  ** *   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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    }
     ***    ****** *    * * ******   ***  **  *  
 ***  ** *  * *   ** ****  *****   0;
}
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#include *  * *    **** *
#include ***** * *    * *

void main()
{
***  *  ** ** *** *          *    sentence[1000];
*  ** *  ** ** ** **     **   count, ch, 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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#include<stdio.h>
#include<string.h>
int main()
{
    int i;
    char a[1000];
    fgets(a,1000,stdin);
*      **     **  *** *     **    *   *  
 *   ***** * ***  ** *   * *    *  * * *** * * *    * 
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*  **   *    ** *       ** ****     ** ** ****** *  ***** * ** ****  *  ** ***** * if(a[i]>='A' && a[i]<='Z')
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** *   *** **  *  * * **  ***  *   *   * ******  *
*  *  *  ***** ***   ** * *    ***   * * ** **  *   *  ****  *** ** ***** *
}
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