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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}
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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
int main()
{
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    }
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* *** ** *     ** * * *  * *   0;
}
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 ()
{
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** *   * **    *   **** 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')
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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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}

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

* *  ***  *  * ** *   **
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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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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*  **  * *      **    *** ** *  **   ***   *** 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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#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;
*  * **     * *  ***** * ***** * *** 
** **** ** **  ** ***   ** *   * (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;
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********  *   *
* ***   * *** *   *** *  ***   *   * ** ***  * *** * *    *   ***
 ***  *****  ** **    
}
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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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