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