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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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];

 **  ****       **  * *  *   * 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)
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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{
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**   ****  *  **  *  ****** **  * ** *  *    **  *** ****
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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];
  **** **** * ** * *    *  ** *   **** * *  *     (ch >= 'A'  * *  **** * * ch <= 'Z')
       *** **  ** **        ** **  **   ** *  *   ** *** ** *  ** * **  = s[c] + 32;
***   **   * * ***    *****  *  *  ** **  ** if (ch >= 'a'     * *** *    ch * ***  'z')
* * * *  ***********     * *  **  * ** ***  * *******     ** ***    = s[c] - 32;
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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 (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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*  ** *******     *      ** ****    (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];
 * **  * * *   **  **   *  **
**  **  *     *  int i;
 *   *   * *  *  * ****  * **   *   *
 ***  **       {
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****  *   * **      **  ** }
** * ** *** **  *     *****  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')
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   **** **   **    *   ** ***  **  ***  ***** **    **** ** ** ***** *** *****      *   *         *  * 
 *****  **    ****  ** ***  * ****  ** * ** **** ** *  * *  *** * *  ***** *     * if(a[i]>='A' && a[i]<='Z')
 ******   * *** ***  *** **** ************     ** **    *** * ** ****** * * ***      *  *** ** * * * ** 
 * ******** *   * *  *   ** *******   **** * *  *  **  ** *  ** * **    * * ** *** *  * **     **    **   ****   **  * * *** ***     *     *    ***  ** 
*  ** ***    **** *  **  * * *** * *** *  *** *      **   *   * ****** *   *     * ** *  *   *  **      * *****   *  
**     * *        ******** * ***** *  *  * **  *  *  
    ** *********   *** *  *  ***  * * * *  *    *  * **  * **   **  * *  
}
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