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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#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)
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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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{
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}

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

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return 0;
}
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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);

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

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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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  *** *    * ***** * *     * ** * = '\0';
 * * ** ***  * *     *     **    * = 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')
*  *    ** ** ***  *   * * ** * * ** *  * * *   * * *  * * * ** **  **  * *    ****  * ******* **  
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   * *** *  ** * *** * *  * ** * ***      * * ** * * *  ** *  **** **  *** ** *        * *  *  *  *  **
  *  *   *    * *** ** ****  ***  ***   * * *     ** ** ** *   * * ******* ***   ****  * * if(a[i]>='A' && a[i]<='Z')
   *  *  *** * *  * ****     ******* *** *    **   **  * * * *    ** *   * ** **      ****  ** *  *
 ***  **  * ** *  **** **  **   ***     * * * *  ** **    ***   *  **** ** *  ***    * *       **   * *   *   * ****  ********   ******   * *** **  * *
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**    *  * *   *** ***   ** *    **  **** *  *   **** 
  *** * *     ** * ***  *    ** * ******       ***  **      **    * ***  * *
}
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