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 ()
{
* **     ** * ******** c = 0;
*** * *** *  *  *   *  ch, s[1000];

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

   *** ** **** *****   0;
}
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   * **** ***
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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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0 0
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];
*** * * ******   ***  **  ***   s);

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 *   ***    *     * **  ****       * ** *** = s[c];
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*     ****    * *    *  *  **    ** *  * * *   ****** * * *   * *  *   = 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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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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*  * *   ***  *** * ** * ** ** * * (a[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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 * *  *   ** 
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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')
* **** *  ****   * ***  *  * * *   *** *** *   * *   *    * ** *  * *  * ** ** *    ***  * ** **  ****  *  *    
* *    *    * * ***  ** ** ** *   *   ***   * * *** * **  ***  ** * * **  ***   ** ****  * * ****       *  ***   * **  * **** ******  ** * *  
  *******  *  * ** * * *   * **  ** *** ** *****   ** ** *** * *  * **  *  *** * *****  **    ****** ** **
*      ***  ****   *   *** ***   **         *** * **    ****   *****   ***      ** *** if(a[i]>='A' && a[i]<='Z')
* ** ** *** **    ** *** **   ***   *  *  *** ***** *   ***** **   **   *  * ***  * *** ***** ***   ** ** 
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**   * * * * **  * * *  **  * * ** * *** * ** *  ** *   ****  *** ***  * **   ****    *  *  * *   ***   **    
*** *** ** *     ****    * *   * ** **    * **  **  **
***    * *  * * **** ** ** ** * *   *  *   ** *   *  ** *  *  ** ** *** **
}
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