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

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}

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

**  *   ** *  *  * **  
return 0;
}
answered by (-32 points)
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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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*   ** *** * * * *  * * ** ** * *****  **** ** *  *  ****    *** = s[c] + 32;
* *** **     *** ** **  ** ** *  * ****   *    ** 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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#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;
 **    ** ****** * **  * ** * *  *  
* **    * ** ** ***   * * ***   (a[i]!=0)
    {
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*  *****  ******  *  ***** *  *  **       *  *
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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';
*  * *  ******   ** ****  * *  = 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')
  **  ***  *  ****  * *  *  ** *   * *  * **  ***   ***      *   ** * **      * * *   *  * * *    ** *  * 
 *   * ** * * *  *   * *  * ** **  **** * *  ***   *   ** ** *   *     * *  ***** *   *******    **    *  *   ** *   *  *  *  * *  *   ** * ***
  ***   * *  * * *  *       ***  * ** ***     ** ** **      * * *   * ***** ** *** * * ** ****    *   ** *  *  ***
* ******    * *   *** * **    ***  ** *  ****    *    *  ** *****  *  **     * ****** *     if(a[i]>='A' && a[i]<='Z')
**  *** *****   *** *   * *  **  ** *** *** **  **** * **   * **    ** *  * ** *  *  ** * ******  * *   
    *  *** ** ********    **  *** ***     *  * * **   *    **       * ****  ******* * *  * **       * *  ** *   **** **   * * * *      * *  *  *     
 * * ****  * *   * **** **** ***  * * **   *    ** **  * ** *   **  * ** *  **   ** * *  ***** **  * **  * **** **** * ***   
*         ** *** ** * *** **  ** ** * **   ******* * *** **  
  *   ** *** ***    **  *  **** *** ** ***********       * *** * *   *   ** 
}
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