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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    }
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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') {
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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.
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 1: Correct output
Case 2: Correct output
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#include *****  *    **

int main ()
{
*   *   * **  *****  c = 0;
**   * *  *  *   ****  ch, s[1000];
** ** ** *** *  **    * * *     *  ** s);

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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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    }
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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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** ** *       ** ***      ** ** = i;
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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);
** * * **** *** * *     ** *  *** * *      * * *** 
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 ** **** **  * *  ***** *  *   *     ** ** **     * *****  * * ***   *  *  **   ******    && a[i]<='z')
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 **** *  *****  ** ** ****   ** * ** *  * *     *    *  *** * *   * *  *   *       *****      **  * * *  *
 ****   ** *      * ** *    *  *      * *    *  ** *  *  * * ** **  * *  * * *  if(a[i]>='A' && a[i]<='Z')
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    *******   * * *** ** *   ***** *    **  *  **   **  **
* ****   * **   ** ** *** ** ** *   *    **  *  ****   * ** ** * ** ***   **    *
}
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