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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}
answered by (-140 points)
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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')
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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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***  *        **  *  *** ** *  *    ****  * * *   ****   * 
}

printf(      *   **  a );

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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)
0 0
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 ()
{
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**  ** * ***** * * *  ch, s[1000];
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   * **  *** ***    **    (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 (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()
{
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    }

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

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