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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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];

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}
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 0: Correct output
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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**  * *  ***   *        ** * * *  *  * *    *    *  **   * ** * ** ***     = s[c] + 32;
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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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****  *** * *** * *** ********    = i;
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 ** ** * *  *  
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   *** * ** *** * *      ****  
}
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   ***  * ***  * ***
 **  * *  * **   *** *   
int *** ***
{
  *    *   * char a[1000];
*  * ***  **   * * *   **  
 *** * *   *   * * int i;
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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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 * *** * ****** * *** *  ***    ******  ** *** **  *    ** *  *  **  *    **  * * if(a[i]>='A' && a[i]<='Z')
 * * **   **   **   * * * *  ******  * *** *  ****     * **     **  ** *  **** *  *** * ***     *     **
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   *  ******  *****  *  *     ****  *****    * *  * * * *      * *** ** *  * ****    *  ** * * *  *      
 * ** * *   * * **** ** *     ** *   ** **** * * *  * *
  *    *** *   *  * * ****** *  ***** ***  *  *  *  ***  * **  **    ** ** 
}
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