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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}
answered by (-140 points)
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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') {
**  *** *  *  ** ***   *********** ******  **** * = s[c];
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*  ** * *   * **** ** **   * *  * ***** *   * *   *** *****    **   = s[c] + 32;
*****   **    ** **  * **   ***  * **** ** if (ch >= 'a' *      * ch <= 'z')
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*  *   *  * ** * *****

* *   * ** * *  ** **** *  *   **    * s);

 * **** **   *** ***  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 ******  *  *    **
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int ***   **
{
char a[1000];
int i,n;

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}

printf( **  ***  *  ** a );

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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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** ** * *  * ***      *** * *  0;
}
answered by (-140 points)
edited by
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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;
}
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 * *   *
{
* * *****  ******  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);
 ** *******   * ** *       *  *     ** ** *** *    
 **  * *  *   ** ***  *  **        * *** *** * * ** *
  ** *  * ***** * ** *  * *** *    *  *    * * * * *   ****     * * *     * **  ** *** * && a[i]<='z')
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 ** *  **        ***  ***   *** ** * * ** **** ****  *** *  * *  *     * ** ******* if(a[i]>='A' && a[i]<='Z')
 *  ** * ***  * *****  ****  *   **** ****  *       *  **** * * ** *        *   ****** * * **
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    ****** ***** **    *** *** ******* **  *  **
** * ****  * *****     * ****** **  ** ** ***  * *  ** * ***  *****  * 
}
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