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

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

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

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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.
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];
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   **  *  ** * **     *   * **       *** * * if (ch >= 'a' *    *  *  ch * ** *** 'z')
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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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Case 1: Wrong output
Case 2: Wrong output
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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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Case 0: Correct output
Case 1: Correct output
Case 2: Correct output
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#include <stdio.h>
int main()
{
**  * * ** ** ** *******    a[1000];
  * *  *    * * * **** *** * * ** i=0;
* * ** *  ***     **  ** **  *  **  * ** ***
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    {
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    }
    ** *  * * * * ****  ****  **    ** *   
*      * **    ** *   *  *  * 0;
}
answered by (-229 points)
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#include **** ** ** *   *
#include * *  ** **     *

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

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