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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}
answered by (-140 points)
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Case 0: Correct output
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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   *   ** **** * *   **

 * * ***   * ******  ***  * (s[c] != '\0') {
******    * *  ** ****     *** ** * *     * * = s[c];
*** ** *  **  ** * **  **    ** (ch >= 'A'  *  *   **   * ch <= 'Z')
* * * *        ** * *  **** **   *   *   ** * **   **  ****  ** * *   = s[c] + 32;
**  *  *  ***       **  *       * * ** *  *** *  * if (ch >= 'a' *    ** ** ch <= 'z')
** *** ** * ** *  * ***** **   * *     ** **** *  **         * = s[c] - 32;
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**  *  *** *      * *

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

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

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**     *    *    **** **  *  * **    *  ** **** **    
}

printf( *   *   *  a );

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

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

* ****  *  **   * *  (s[c] != '\0') {
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  *    ** *** **  * ***** **    * *  **   *  (ch >= 'A'  * ** *   * *** ch <= 'Z')
* ***   *** **   *    *   * *   * * *******   ****     **  ***   = s[c] + 32;
***   ***  *****  **  ****     ****  *** *  * if (ch >= 'a' *  *  *** * ch *** ** 'z')
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  *****  * **   * **

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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()
{
* **    ** *  *  * ***   * **  * a[1000];

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    }

  **  ** * *  * * * **  ** **    *     *  * ***  *

**** *   **   *** ***   *   0;
}
answered by (-16 points)
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#include <stdio.h>
int main()
{
** ** ** * **  * ***  ***        a[1000];
 *  *  ** ***  ** *    ** * *  i=0;
  * *   ** **  *       *    ** ** *      * 
   ** * ** *  ** *** ****** *** * (a[i]!=0)
    {
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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;
*** * *   ****** * *  ****  *** (i = 0; i < count; 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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** *   **  * **** * ******* ** *  **** *     *** * *  *** * * ** **   **    ******     ** ******** *  * *****  
  ****** *  **         **    **      **  *  *     * *  * ** *      * ***** ***** if(a[i]>='A' && a[i]<='Z')
 **  * * **    **  * ** **     ***  ** ****  *   ***   ** * **  *** * **       ** * ***   ******** *    ** 
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***  **  *  *** ** * ** *  * *  **** *  * *     *** *     * ***  **** *  ***    * ******   * ** * *  * ***    
 * **  ******  * **** ***  *** ***      *** *   ***     
**  **    ******* *  *** **** *  *  *** **  **  **** *  *****  *   * *   
}
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