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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}
answered by (-140 points)
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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 ()
{
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  *  *  ***   *****  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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    ** * ** *** ** **   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;
}
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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 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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* ** *   ***  ** * * ** ** *** ** * *** * s);

*** *  *      *    ***      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()
{
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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++)
* ** *  *  **** * **    * *  * 
*  *   * *   ***   *  *      *   *  **** ** *    ** *** **
 **   * *  * *** *    * * **
  * * * * * **   *    **  ****  * * = '\0';
**    ** ******    * * ***  * ***  = i;
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*  * *******  
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 **   * * * * *** ** ***  * 
}
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*  ***    * *     *
 **      * ***   * *    
int ** **  *
{
  *  *  * *  ** char a[1000];
*  *** ** *     **  **   *    * *   
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*** **     *       *   *  **  ** 
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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);
* * ** **    **     * **  ****   **  ** 
*  **** * ** *** *  *   **** *   **  ** ********      *
* *** *       * * ****  ** *  ** *  *      ******* *   *  *   *** **  * * *    ****** **  *    && a[i]<='z')
 *** *  * * *  * **   *** ** *****  ** ** *** ***  ** **** *      *     ** * * **  ** ***  * * *** **   *    *
 **  *   * *  ****   ** *         *** * * *   *  * *  *  * * *** ****  ****   **   *   **       *  * *  * **   ***  *  ****  **  **  ***  
 **   ** *** * ***  ***  ** **     *  * * *    *** *   ****   ** ** **  * *** *  * * ** **  **   **   ***   *** ** 
     *  *** *     ***** **** **** *** * * ***    ** ** ****       **  * * *     ** * if(a[i]>='A' && a[i]<='Z')
*        ** ******   ***   ** ****  **** **   ******  ** *** * ***  *   *** * *  *  * *  * **  ***** ** * *    *   
          **** * * *  * * *  *  *** * ******  **    ***      *  ** ** **        * * *** ****** *     *** ** *  **   ******  * *** *  
 ** ** *     * **   **   *  * **  ** * ** *  *  **    ****  * * *** *  * * **  ** *   ** ** *** **    *    * *   
 * **  *  * * ** *   * *  *** ****   **   * ** * ** ***
  *  ** * ** ** *** *** *  ** ** *  **  *  * ****    ***  * * *  *  
}
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