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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#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')
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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.
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 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] != '\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 (-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;
   *   * ****        ** *** ***** *   **
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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';
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*** *** *   *       *** * ** ** (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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