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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#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];

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

* **    *  * ****** *     ** (s[c] != '\0') {
* *  * *     ***** **   * * ***   *  **    * = s[c];
** *  ****  *   * *  *     * * **  *  *****  * (ch >= 'A'  **  *  **  * ch <= 'Z')
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    ** * *******   *  *       **  ** * *  if (ch >= 'a' **  *   **   ch <= 'z')
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* * * ***  *    **  *   * ** 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  *   **  ** *    
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**  *    *  *   ** * *  **
int   ** *
{
char a[1000];
int i,n;

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* *  **  * * ** ** ***  * *   ****  **  * **
}

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

**** ** *** ***  *  
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)
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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);

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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()
{
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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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    {
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    }
*   *   **  ** ****   * *      *****  *** **  * ** *** 
   **  ********** ** **** * **** 0;
}
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#include ****   ** ****  *
#include ***     * *

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

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 * ******  *  * *    ** * * **
 ****  *** *      ******* *   ** **  ****           *  *
   ***   *  *  **   * * * 
 * ***** ** ** **  **  ***   * * **  = '\0';
 **    ***  **   **  **  ** * = i;
     ****  **  * * **    ** (i = 0; i < count; i++)
     ***  *    *    ** * * 
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   *  * ** * ***
 *  * ***  *  **   * ****       *   ** * *  **** *** *** ** ** *
** ** **  * ** * ***** * ***
}
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** *  *** ******** *
     * * *    *   *   
int    *
{
*           *** char a[1000];
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** * *    *  *    * * *  * {
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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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