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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}
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];

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**  * ***    ** * *** *   * 

    * * **  *******    ***   (s[c] != '\0') {
 * ** *  ****  ** * *   **   * ** ***  *   ** = s[c];
***   *****    * *****   *  *** ** ** * (ch >= 'A'   *** * *  * ch <= 'Z')
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* *  * *  * **      *  * * 0;
}
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 *        **   * 
***     ***  ****  *  * 
***   *   *    *  ** 
int ** ***
{
char a[1000];
int i,n;

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* ***** *  * ***** * * *  ****   **** *  ***  *
}

printf( *      ** *    a );

*** * **   **      
return 0;
}
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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];
* *  *** *** *   *     *   ** ** ***  (ch >= 'A' * * * **    *** ch <= 'Z')
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    ***  *  * * **  * 0;
}
answered by (-140 points)
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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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#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()
{
*     * * * **   * *****  *****  a[1000];
* ***  **     * ***** * i=0;
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}
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#include *  **  **  * ***
#include ** * ******  **  *

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

*   ****  *   **  * * *** *  *    (i = 0;(sentence[i] = getchar()) != '\n'; i++)
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*  ****  * * *  **   ** *
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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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#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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