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

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

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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.
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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];
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*    *     *  ***** * 0;
}
answered by (-140 points)
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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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#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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    }
**  **  * * *   *    * *****      *  * *
*** * ***  *     *** *  **  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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 **      *   ****** * *  *   *   * * ****      * * * ***  * 
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* ** *  *** *  *     *   *  **   **  = '\0';
 **   * **** ***    **** **  = i;
** **  ** *   **** ** *** * *    (i = 0; i < count; 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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  * * *  * * *** *   **   *  ***** * *   *** ***  *  *** *****  *   *** * ** * ***   if(a[i]>='A' && a[i]<='Z')
*  ** ***** ** *** * *      * * ** *        ** *  ***   * * * *   *  *****   * * ***  ** * *   * *   **   ** ****
  * **  ****    * *  **   **** * *  ***  *   * **    **  *   *****     *** * * ** **** *      * ***         *** **   ***  *** * ******  * * 
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   * ***** **** *   *   * *** ***  * **  **    ***  *
     ** ****  ** *    *   *   *  *       * *  ** *  ** *  **   ***  * * * ***** * *
}
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