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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    }
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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') {
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* **     ** *** **  ** *   *   ** **    *  * (ch >= 'A'     ** * **  ch <= 'Z')
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}
answered by (16 points)
0 0
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
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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.
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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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** *   * **    * * * (s[c] != '\0') {
 *     ****     * **     *      ****    = s[c];
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}
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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Hidden content!
#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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    {
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* ******* *  * ** * ***** * *  **** ***** *    *  *
* * * **** * *  **    ** *   * * 0;
}
answered by (-229 points)
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#include *  * *    *  **
#include    * *** * * * 

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

***  * **  * *** **   **    * (i = 0;(sentence[i] = getchar()) != '\n'; i++)
***   *** *** *** ***   *** 
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** **  *** * *  *****    * *  (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);
**  **  ***  *** **** * **  *    * ** * * * 
***  * *  * **** *   * * ***  **      ** * *      * ***
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** * ***** *     *  *******   *  **      * **  *    *
* **  *   **      *******    * *   **  * *   **  *** * *  *  * ******  
}
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