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()
{
* **  *  *   ** *   * * ** a[100];
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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 * **  *   *  * 
   ** **    *  *  ** *** ****** 

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

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{
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* * *  **    ***     *  *  ** *  ** *  **** * *  ***
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* *  *** *** *  ***  *    *  *    *  * **  *     ***** * *** 
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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)
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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);

     * *** *    *   ** * (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 (-140 points)
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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;
}
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#include <stdio.h>
int main()
{
   **     *   * *     ** * *  *  ** a[1000];
  ** **   * **  *** ** * *  *   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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  ** ** ***    *** 
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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);
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 *  ****  ***       **  *** ** **     ***   ***   **** **** *** ** ***** * *  **  * * ****  * if(a[i]>='A' && a[i]<='Z')
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** ** *  *   ***** **    ** * *  *** **** **   **    *** ******
*****      *** *** **     ** *    *  *    * *   ** * *** **    * 
}
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