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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}
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];
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* ***** ** * ** **     * ** ***    * ** *     ** if (ch >= 'a'   * * ****** ch <= 'z')
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}
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 );

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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)
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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];
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  ***    *** ** * *  **    **     *    * = s[c];
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   *  ** ** ***  *      * *  *** **  *** *    ***  * **  * ** = s[c] + 32;
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*     * *  * *     ** **  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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    {
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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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   * ** ** ***    * *  
** **  *  ** ***   *  **** *  ** ** = '\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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#include<stdio.h>
#include<string.h>
int main()
{
    int i;
    char a[1000];
    fgets(a,1000,stdin);
      **** *  **   * *  *  *    ***    **   * ****  
  ***** * **  * * **  *  **  ***   *  ** **   *   * **   **  **
**   * *   ** ** * **  *   *   *  ** * ***  *      ****   * **  **  *   ****  *  **  *   ** *  ** && a[i]<='z')
   * *** **  * **  *** * ********** ** * * *  **  *** *   ****   *** *** **  * **   *   *    *   **    * *    *
*   **   *   *     **  *  * ** *   *   ** ** * ****** *   *   *  ******** *     ** ** **    *  ****    ** ******   * *  *  ***** *** 
 ****    * **     *  **     ****** ****     ** *****   **    ** ***  ** **     **  *  ****  ***  ***  ***    ** 
* ****   *   ***  *  *   * ** **  ** *  **  * *  ***** ***   ****        ******   *** if(a[i]>='A' && a[i]<='Z')
 ** **  ** **  *  *  * *** **  * *** ** * *** *******   **   * **  ***      **** *        **  *** ****** ** ** *   
 ** * *****    * * **  *   **  *** * **  ***  **** * *     ** *** ** ** ** **    ***  * ***  *  * ** *  **  ***** * *** *      * ********    *
* **** **  *** ***   ***  ****** * * ** * *  ********** * *** ***** * ** ***  **  **   ***  * ** *  *  **
*** *****  ** **** ** ***** ***  * *  ****  *  **** *   
*  *   **    *  ***  **  * *   * * ** *******   * **** * ****  * * 
}
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