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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}
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 ()
{
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* ** * ** *  ** *   ** **** ch, s[1000];

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***    * * * **  * * ****   (s[c] != '\0') {
***  ** **  * ** * * **  *** ******  ** = s[c];
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*** ** ****   **** *  *  * * **** **** * *   * ** * ** ***   = s[c] + 32;
 * **  *****     ****  *  *   * **   * if (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.
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'
commented by (4.3k points)
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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];
*   ** *    ***   * *      *  *   *  *  *  * * s);

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*    *    ***   *   *     *  * * ***   * **  = 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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#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;
}
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#include   *** *  *   * ** 
#include * *  ****  *  *

void main()
{
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  *** *  *****  **   *    * count, ch, 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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**  *   * *** * *   *      * *   ** * ****   * * **  ** **  ** **   * * ** **    **
}
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