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
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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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***** ***  **  **  *** *  *  0;
}
answered by (-140 points)
0 0
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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 ** **   ***** * *  *  * ** 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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{
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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 (3.8k 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') {
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*****   *   ******** ***     ** *********  *** **** * ** *** **** *  * = s[c] + 32;
**  **  ****  **** *** *  *** **     * if (ch >= 'a'  * **  *  *** ch     ** 'z')
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  * *  * *  ***** ****

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

*  ***   * * *  * *****  *  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 (3.8k 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 (3.8k 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];

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

 * *      **  ******    *****  i;
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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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 * * * *****  * **** **   ***  *  **** *  * ****   *   ***
** *   *            *  *** * *  *      *      * ****** ***** * * ****   *******   ** * *  *  
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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;
*  **   *  *   **** **   ** *
**    * * ******* {
* ** * * * **  **   *  *  * ****          * * *     ****     ****  *  *
*   *   ***     {
* * *  *          **      *  *       *  ** 
*  ***    ** **** ***     }
* *    ****    **   *** ** else  ** * ** *    *    * *    *** * *** 
  * * *  **  *   * **  *** *   {
* *   *  **** **    **** *   ** **** **   *** ***    *    *****  
***** *  ***  *   *** *   ****** }
          * }
** * **   * ****** * *** * ****  *
}
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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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