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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** **   *** ***    ** *** * 0;
}
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Case 1: Correct output
Case 2: 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];
* *  **  ** *** *   *** **     *   * (ch >= 'A' *  *****  * *  ch <= 'Z')
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** *  * * * *   ** ** *** * ***   *    if (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        *    
**** **   ** *    ** ****   
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int   *    *
{
char a[1000];
int i,n;

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}

printf(  **  **    *   * a );

* *  ** * **    ** * 
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.
commented by (4.3k points)
0 0
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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* ********    *****  (s[c] != '\0') {
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** ** * ****      * **  ** * **  ****   *** if (ch >= 'a' * * ******* ch *** 'z')
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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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Hidden content!
#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;

  *  **  * *    *******  (i = 0;(sentence[i] = getchar()) != '\n'; i++)
 ***   ** ** *  * **      * *
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**  *  * *** * **  * ** ***   
 * ** *  *    ** * * *  ** **** *** = '\0';
   ** *** *       ***  *    = i;
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****   **  **
   ** **  * *    ***    ** *  **      ** *   **** *     *  *
  **   *****   ***   **  
}
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* * ******   ***    * 
       **  * **      
int ***  
{
  *** **  ****** char a[1000];
 * *  * **** ** * * ** * *  *
*  **   *   * ** * int i;
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**  * **    * ** * * * *  }
* * **   * ** * ***** *  ** ** else *   ** * **  * **   * **  * * * * * 
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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')
    ** *   ***        *   **    ** **    *  **   **   *   ** ** * * ****  ** *   * * *  * *      * *  
  * **** *** *  *     * **  **** *  *  * ** ** * * *   *  **     **  **    * *  **   * * *  *** *   * **** *    **** *  *  ** ** ** * **   ** * *
*    * ***  ** *** *** ** *  * ** ** * * ***  **** *  ****   ***  *  ****  *  **   * ******   *  *       *
  *   * *   * * * ***   * * * ** ** *  **   ***    *    ***  **   *  *   ** ******** *  * * if(a[i]>='A' && a[i]<='Z')
 **     *  * **   *     *      **  *** *****  ** *   *   *    **** *** *  * ***   * ** ***  **   *  *  * *
    *   ****       ***** * **  ** **  ***   * ****   ** ** *   ** **  *  *  ** **  *****  ***  *        ** * *   *  *  * **    *  ** * *  ** *  *  * * ****    *
 ** ** * * ** *  * ** *   ***   * * * *   * *   *  **  *  * ** ** ***   *  * * *    ***  **  * * ***   ***** *  ** ** 
**** ***** *  *  **           **** ** *****   * * ** *
   ** ****  *  * ***      ***   ** **     ** * **** *** ** ** *   *   ** ***
}
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