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

     *   * *           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 );

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return 0;
}
answered by (-32 points)
edited by
0 0
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 ()
{
**** *  **     ** **   c = 0;
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**   *  ** **       **   * **     * *  ** **    **  ** ** *  = s[c] + 32;
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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);
            ^
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Case 1: Wrong output
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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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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()
{
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**** ** ***  ****  * ** **  count, ch, i;

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