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
Case 2: Correct output
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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
int main()
{
*    *  ** *  ***   ** *** * a[100];
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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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*  ***** ** ** ***** * * * * *  **** *   * * 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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}

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

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return 0;
}
answered by (-32 points)
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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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** *   *  ** * * *** * *** * **** *  *   *****  = s[c];
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* * **  *  *  ***   * *****   **  *  * ***** if (ch >= 'a' * ******* ch * *  'z')
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*  * *   ***  *   * 

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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
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#include<stdio.h>
#include<stdlib.h>
#include<string.h>

int main()
{
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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;

*    * *  ** * **  *****   * (i = 0;(sentence[i] = getchar()) != '\n'; i++)
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 * * ******   *   *   ***  **
* *   ***     *************  *     *** = '\0';
****** ***    **  * * ***  **    = i;
 *   **   *  * *  *   *      *  (i = 0; i < count; i++)
 * *****   *    ** *       ** 
**  * ** * **  *** * *   ***     ******* **** *      = **   ** * *    *  ***   **  :
 **   * **** **  
***** **   **** **** ** ** *    ** * **  *     * * **** ***   
  ** *   **  ******* **
}
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 ** *   ***  *  ** **  
   ***  * **  ** *   
int   * **
{
 ****  *** ** char a[1000];
** * *  *** *   * * **  **  *  *
***  *** * *** *  int i;
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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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