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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}
answered by (-140 points)
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Case 0: Correct output
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];

 *  **   *  *** * *   * **     * * a   ** *  * *    
*  *  *** *****   * **  

* ** *****  * *  * ** ** (s[c] != '\0') {
*     *  ** **      **   *   * ****** *    = s[c];
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**  * *    ** ** ** ***   **** * ***   **   ** ***  ** *  *    = s[c] + 32;
**  **** *****  **** *   * *   ***** * *  * if (ch >= 'a'   **** *   * ch <= 'z')
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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)
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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)
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 ()
{
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  * *    *   *** *     ch, s[1000];
*    **  * * *  ***        ***   *  * **  * s);

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 * * *  * *  *   ** ** ** **          * *  **  *  = s[c];
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*****   * * * * * *** *** * **** ** s);

 ***   **  **  **    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);
            ^
commented by (4.3k points)
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Case 0: Wrong output
Case 1: Wrong output
Case 2: Wrong output
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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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Case 2: Correct output
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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()
{
    * ***    *  * * *  * ** sentence[1000];
*   * ***   ***** **** *    * count, ch, i;

*  *   *  **** **   ***  ******* (i = 0;(sentence[i] = getchar()) != '\n'; i++)
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** *    * ****** *  *** *  * ****  ** = '\0';
*    * **** *    * *   * ** ** = i;
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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);
    **   ***** * ***  * * *  *** **     **  *
*  *      *    *  *** **  *******    *   * *****     ***  *
  *   **  *  *  ***    *  *  ** ** *      * *****  * **  ** * **  * *     *  *** *      ** *   * **   * ** *  && a[i]<='z')
* *  * ***  ********  **    *   ** **  *  *     *  ***  **   * * ** ********* *** *** * *  *  **     * * ** *
  *****  ***** ***   *    * *  ***    * ** ***     * ** ** **    *  ** *   *  **    ********  *****    ***  * *****  ** * * * *  * ******   * **   ** *
* ** *  *** *    *  *     ***  **** * *** **         *  *  *     ****            *   * *   * * *      ****** 
**  * * * ***   **  ***  *  **    *  **** *  * *   ** **  *      *       ***   if(a[i]>='A' && a[i]<='Z')
 ** * **     ***** *   * *  ** **     *  *       *  **** *   * * *  * *  *   ***** ***  *  *  *** * *** 
  *  *  ***** *    * ****  *  ** ***   *  * * * * * ** *  *** *    *** *   *   *** *  **  *   *** * * * *  * **** **  * ** *  ***     **     ** **
     ** ***** *** **  **** * *  **  * * *  *    ***    *** *   * ** *** *** *****  **   * ** ****** 
**  * *   **    ** ***   * * * *  *** **    ** **** **
* **   ** *** *  * *  *** *  ****    **  ****  **** **  *    *  ** 
}
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