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 0: Correct output
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];

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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)
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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;
}
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)
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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 ()
{
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  *      *    * **  ***  ch, s[1000];
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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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Case 0: 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;

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* **** *****   ***  *** ** *  ** **   = '\0';
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**  ** *   
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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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#include<stdio.h>
#include<string.h>
int main()
{
    int i;
    char a[1000];
    fgets(a,1000,stdin);
   ** ***  * *  * *   *** **   *     ** **  * *
*  **    ***** ** *****    * **  ***** *  * ***   *   * 
 ***    **      *        ****    * **  *      *  *   **   * * ** **  * **     *** *  * **     * && a[i]<='z')
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*  * *** ** ***   **  ** *      *   ****  * ***   ***  
   * ** ** ** **    *** *   *** ** * ****   *  *  * *  ** ***  * *   *     * * 
}
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