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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}
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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];

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*  ***** * ***** ***   ** 

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

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return 0;
}
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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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**  *   * *   *  * * **   * *   **  * ****  **    = s[c];
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*** ****  *** * ****  ** ** * *** **   **** * **** * *  **  **  * * = 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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* **  *   *   * * **  ** **** 
  ** **  ** * ** ****   * ** *  **  = '\0';
*   ** **   *  ***  *  ** *       = i;
*** * * *     *     **   (i = 0; i < count; i++)
*   ** **  * * ********  ** 
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* *   * * * *  **
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**    * *      *    * **** **
}
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  *    *  * * * *
   ****  ***  *    * **
int  *      
{
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  *****  *   * ** ***    * **
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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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 ** **  *   ** * ** **   **  *** * ***  ***  ** **   
  ***********  * ******  ***  *  * ** **    **  ***   ** **  *****  **** **  **  *  
}
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