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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Case 1: Correct output
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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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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      ***   * *
****  *  **  ** * **    

 *  ** ** **** *   *   *  (s[c] != '\0') {
* ****** *  * *      * * *****  *    *  *  = s[c];
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    **** ** **  * ***** *  **    *  ** * ***  *  *    *** **  = s[c] + 32;
*   *** ** *  * **** ****** * *  *  * * **  if (ch >= 'a'   *  ** ** *  ch <= 'z')
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*  *  *  * * **** *    * 0;
}
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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{
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}

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

** *    ****  * **  **
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.
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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 ()
{
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  * *** ***** **    *  *   ch, s[1000];
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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)
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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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   *  *   * ** *   *** * **  *      ***      **  *  ** *   
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}
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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';
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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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 ** **** ***  **   *** **  ******* ** * * * *   * *  *******    * * ** **   if(a[i]>='A' && a[i]<='Z')
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*** ** * ***** *   * * * *** * **   ******
******  ***        ******  **** * *  ** * * **  *** * **  * * **  ** *      ***   
}
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