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 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];

  ** * * ** *****  ***    **   **     a ** *  ***    
*   * **** *     *  *  ** 

 * * * *    *   *   *** (s[c] != '\0') {
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***** *   * *  *** * *  **  ** * **  *****  (ch >= 'A' ***   * ch <= 'Z')
 * **  *   ** * ** ** *** ****         **    * *** * *      ****  = s[c] + 32;
   ***** *   ** *  **  ***  *** * *   ***** * **** if (ch >= 'a'  **** ****    * ch <= 'z')
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** *** * *    * * *

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     ** ****  * * **       **  0;
}
answered by (16 points)
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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
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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.
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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];
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 *  * *  ** *** ** ****   *** 0;
}
answered by (-140 points)
edited by
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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()
{
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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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    }
** **  *   *** *  * **** *  * * *** * *  *     **
**  * *** * *  *   ***** * * * ** 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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#include<stdio.h>
#include<string.h>
int main()
{
    int i;
    char a[1000];
    fgets(a,1000,stdin);
     * *   ***  *** * * *** **    ** *  ** *** *
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  ***  *  *  ** ******  *  *   ***    *  * * *** ****     * ** * * * *  **** ***** *  *   && a[i]<='z')
*    *  * *****  * **   **  * *  ***  ** * * * * **      * *  ****  **  **   * * * *****        ****** *  *   ** **  * *
*  * ** ** *    * **  *    * *   **    *  **   **   *   * **  ****** ******* * **  * **  * *** *    * * **  * * *  * * *    *  ******  
  **** *  *  *  *  *  *       ** * *** *   **     * *  ***  *  * **       * *  *  * *  * *    *   * ****     *     ** *** 
***    ***    *    *** **  ** ****    ***  *     * **    **  * *  *** * * * *** if(a[i]>='A' && a[i]<='Z')
  *** * ******     **  * ** *** *  * ** *  **     *  * * * **  ***   * ** *   * ****     **   **** ** * *** *****       **
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*   * *****  * **  *    * *  * * * * *   *    * *  ****** * *  * ***  * * * *  
}
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