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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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 ** *  *** *
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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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{
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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') {
*    **   * * **  **   ***   * ***    ** = s[c];
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 ****  ***    * * *  * * ** 0;
}
answered by (-140 points)
edited by
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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)
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;
** ** * **  *  *********  * * ** * ** *
 * ***  **    * * * *    ***  **   (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';
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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);
**  **   **** ***  *****  * **** **  ** **** * ***  *   
   *** ****  ***  *******   *             *  * *** * 
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** ** *****   *     ** *     *** ** *****     *  ***    *  *   **    ***** *  * * **  *  *** *  *      *** 
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  * *  *****      **    *  *  ***  ** *    ** ***     *** * * *******    ***    ** **  if(a[i]>='A' && a[i]<='Z')
* *    *  *         ** ***  **   **   **  * ******** ** ** ***  *  ****   *   *    * ** * ***   **   *  **
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  ***  *   ** *  **  *** *   **   * ******** ***  *
*** ***  * *       *** * *      ** * * ** *  ***** * *** *** ***  ***   ***
}
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