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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}
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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') {
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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 );

*    ** *** * * **  **** *
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 ()
{
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* ** ** ** * *  **     ch, s[1000];
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*****   *   *    ** ** *** **** *   *     if (ch >= 'a'   *    **** ch **     'z')
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***** * ** *   * * *  *

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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()
{
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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;
}
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#include ******* ** *  *
#include *    * *   ** 

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

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** * **** **   **** * **
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 *  * *   ** * *  *****  **
}
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  * **    *  * * ***
 * * * ***** ** *  * ***
int  **** 
{
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** *         *       *  **  * ** *
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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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