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()
{
   ***   * *        * *    * a[100];
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    }
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**** **   * ******  *   **   0;
}
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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;
** ** * ********* ***  *   **     * ***  ****  *
* * *  **    *  **  * 

* **   ****    ** *   **   *****  ****  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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{
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    * * *** ****    *   **** * *       *** ****** **** 
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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.
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);

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*     *  *   ******* **** *  ****   * *   * = s[c];
   *  *   ** ** *** ** *       *     * *  **  * (ch >= 'A'    ** *  ch <= 'Z')
*   ** ** * *** **  *  *   ** *  ***  * ** *****  **   *  * ** = s[c] + 32;
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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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#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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    }
*  *    * * ***** **** * ** *   **     * **  **** * *
*** * *    *  *** *  *  *** * *  0;
}
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#include ***    **  *  
#include  * *   ****     

void main()
{
 **   * *** * * **    ** *  sentence[1000];
******  ** *    *      *   *** count, ch, 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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