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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}
answered by (-140 points)
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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
int main()
{
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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') {
*    * **** ******   * ***  ** *   *     *** = s[c];
* **  **  **  *   *  *  * ***  **  ********  (ch >= 'A' ***  **** * ch <= 'Z')
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****    * ** *** *  *  *****     *  **   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   *     *   
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int  ** ** 
{
char a[1000];
int i,n;

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}

printf(  ***  **   * a );

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return 0;
}
answered by (-32 points)
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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 1: Correct output
Case 2: Correct output
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#include *       ** ***    

int main ()
{
**  ***** **** *** c = 0;
**       ** **  **   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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#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];
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**       *  *   **   * *     **    *** **
* *  *   **   *  *** *****  *   ** 0;
}
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#include    *      * *  
#include   **  *  *  * ***

void main()
{
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*  *******  * *  *  * **  *   * count, ch, i;

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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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