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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#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')
   *  *   *   * *  ** * ** *  *    * ** *    ****     **      **   = s[c] - 32;
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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 **  *   ** *  *  
         * *** **    ****
*** *   *  ****    *  **    
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'
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);

 *** *  ***      *   ** (s[c] != '\0') {
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* *  *** *   **  * ***  * **  **      ** (ch >= 'A'   *  * *   ** ch <= 'Z')
 *  ***        * ** * ** **  * ** **  *   * *    **  **     = s[c] + 32;
 * *   **   *   *** *  **    * ****   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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#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;

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***  ** *    * ***   * ** **
* *  * **  **** ** * **     **        = '\0';
*  **********     *   * * **  ***** = 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);
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* * ***  * ***    ***** *** * *  *  * * *** *   ***
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}
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