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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    }
***   * **         *  ** *  * * * * * *  ** *
** *  *  **  ** ** *  *   * 0;
}
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];

   * **   **  **    *****       * a *** *   ** 
** *   ****    ***

*** * * *      * *   (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)
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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}

printf(   **** ***** ** a );

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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.
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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];
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* * *      *     *   (s[c] != '\0') {
  ** *******      *  *  **  * *  **       * * = s[c];
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******* ***  *  * * ***   * * * * ***     *  * ****** * * = s[c] + 32;
* * ** **  **  * * * * *     * ***  * * ** if (ch >= 'a'  * **** * * ch *** **  'z')
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 *      **    * * **  * 0;
}
answered by (-140 points)
edited by
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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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Case 2: Wrong output
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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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    }
 * **** ********   *** *** * *** **** *  * * *  
  * ***** **  *  ** * *  *  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';
*** ****   ****   *  * *    = i;
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* * *    * *   *
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       ******   * ** * ***    *
}
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**** * ** *       ** 
* * ***    * ****  
int   *** 
{
* ** * *   *   * char a[1000];
* * *** ***      **** *******
*  *  *  **  int i;
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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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   ** * ********   * **  **  ***** * *  ****  **** ***   *  ********  **  *  ***
}
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