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()
{
**   **   **   *    **   **  a[100];
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    }
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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];

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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)
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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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{
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}

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

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return 0;
}
answered by (-32 points)
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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.
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 1: Correct output
Case 2: Correct output
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#include **  ***  * * ** 

int main ()
{
*  *    ** *** *   * c = 0;
****   ** *   ***    ch, s[1000];
* **   *   *  * ***   ** **  *    * *  s);

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    ****** **  *       *    *   ***  *** *  *  = s[c];
  *** **   **   * *   * * ****       * (ch >= 'A'   ** **   *    ch <= 'Z')
***  *    ***  * ***  **** **   **   * *** **  * * ***  ***    *   * = s[c] + 32;
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* *   *** ***** ***** **     * * * * *  **   **  **** *  *** = 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()
{
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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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*** ****    **** ** * *    *  **** *   *   ****
** ** ** ** ****  *   *  **   **  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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*    **    **    *   *  **  * * * *** * * *   *      *  * ***    *  * * *
** *  *** *  ***     
}
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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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