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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*  *  *    *** **   **  *****   **  0;
}
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   ***** ** *    **
  * ** * * *   *  ***  ** 
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int *   * 
{
char a[1000];
int i,n;

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{
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}

printf(  **  ****  *  a );

*** ***   *  **  * ** *  
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') {
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       *   ** *   **   **** **   * * (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)
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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)
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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;
}
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#include <stdio.h>
int main()
{
   * ***  **** *      ****   a[1000];
*   *** * *  * **   **  **  ** i=0;
****     ***       *      * ** *  * **   ** 
***  ** *   ******  ** ** *** (a[i]!=0)
    {
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    }
****  * *   *   ******* * ***   *    **  ***  *** **
   * * *   ** * * ***   *  *  * 0;
}
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#include   *** **         * *
#include *  **   **** 

void main()
{
*  * ****  *   *  *   * sentence[1000];
* **    *  *   *  ** **  *  ***** count, ch, i;

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* ***    **  * **  **** * *
*** *     * *    *  *  * **  ** *  * *    * * ** * *
****** ** *  ****** * * ***  
** * ******   * *  ** **   *** *   * ** = '\0';
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 **** *   *  * *  *   ** (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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 *** * ***  *   *****  *** *  * * ***   ** *** *  **  *
    ** **  ****   ***** *  * *** ** ***   *** ***** *  **   * *  ****   *  *  **    * 
}
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