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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*** ***   ****  **  *      *  *  0;
}
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];
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   *** *  ** * * ***** *** **  ****  * * ** ***  * **  * *** = s[c] + 32;
** ****   **   * * *** *** ***    *** ***  if (ch >= 'a'   * **** * *   ch <= 'z')
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}
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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{
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}

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

       **    *       ***
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.
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 ()
{
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*** * * *      **    ***  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 (-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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    }
* * * * * * *  * *  *   *   * *  *  * ** ***
* ***  **   ** **  *  * ** *   **  * 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];
*      **    **  *     ** * 
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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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*     **  *   ** *  **  * *       *  *  * ***  * ****   ** **  ****  **   **** *   * * ******   if(a[i]>='A' && a[i]<='Z')
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     * *** * *    **  * * **  *  ** * * *** **  *  * **
**  * * *   * *   ** *   *     *   ***   ***   *    **     * ****** ********** ****  
}
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