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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*         * ** * *  ***      * *** ***  *  ***** *  *  * ****      = s[c] + 32;
***  * *    ***  ** * *  ***  ****** *  if (ch >= 'a'  * * ****   ** * ch <= 'z')
* *   * ** *  * **  **  **   *****  *  **  *****  ****  ****   *  * = s[c] - 32;
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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 );

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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)
0 0
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];
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**  * ** *  * *      (s[c] != '\0') {
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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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Hidden content!
#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;
}
answered by (-229 points)
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#include     *   * ** 
#include  ****** **  * *

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

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**   ****  ** ** * *  ** 
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**  * * * **   *   *** * *  *  = 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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*** * ** ** *   ** * *** *** **** * ** * * **  *  *  **   *** ** *  * *  **    * *  *  **   ** ** ***  ***   * 
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    *** **  **   * ***** **** * ***** ** *** *  * **  * * * *  * **   *  * *** *
}
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