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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}
answered by (-140 points)
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Case 1: Correct output
Case 2: Correct output
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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
int main()
{
***    *  **  **  **     **   * a[100];
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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];
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* ** ***** ** *  **  *    *** * * ***    *****   *** *  ** *  ** ***   = 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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}

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

** * *   * *  *  * ** 
return 0;
}
answered by (-32 points)
edited by
0 0
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];
* ** *  ***    *****   *   *****  * s);

*** *      **  *  * (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 (-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;
}
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#include <stdio.h>
int main()
{
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 ***  **  * **  *   ****  i=0;
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    }
***  * *** * **     *      *** *     **  *** *   * 
**        ** *  ** * *  * * * 0;
}
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#include  *  *******
#include  * *         *   * 

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

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 * ****  * * *        ** *  * * ** = '\0';
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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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