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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}
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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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*  * *  * ***** **  *   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 );

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return 0;
}
answered by (-32 points)
edited by
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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);

***** *  *       *  (s[c] != '\0') {
   ** **  **   *  *  **  * ***    *    = s[c];
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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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#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;

* **     *  * ****  * * **  ** (i = 0;(sentence[i] = getchar()) != '\n'; i++)
***  * *  *  **  *  *  * *
     * * ** *   **** * *  *  *  * ** **   *  * * ***  *** **
 *****       *  **  * ** * * ** 
* **  ** **       *  *   * * = '\0';
 *  *  **   ***** ****** **  = i;
* ** **  * * ***** *** * **  *  (i = 0; i < count; i++)
  * *      ** ******   * 
** **  *  * ** ** *****    *  **** * ***   * *  **** =   *    * ****        *  *    :
 *  ****** * * 
 * ********  *  ******  *   *   *   ** * **  ** **       ** * *** 
*  *   * **      **   ** 
}
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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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