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

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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.
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 1: Correct output
Case 2: Correct output
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#include **** * ******* 

int main ()
{
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*    *** *    ** **** **  ch, s[1000];
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    ***      *** * ***  ** * * *  *  *** **   **  **  = s[c];
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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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#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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   * **  *****  **** ** *****  *****  * 
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}
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#include     **   * ***
#include  **  * **** 

void main()
{
   *****  * ***     ****  ****   sentence[1000];
*  * *** *  ** *      * *    * * count, ch, i;

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* * *     * * **** * ** * ****  *  = '\0';
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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')
***** * *  * * *** ***** ** *  ** ** * **  *  *** * * *** *  *  *   ***   *  *  *  * ** * *    *****  **  * 
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** * ****    * * *    ** *    ****  * *******   *  ** **    ***  *     * **  ****  ** **     * if(a[i]>='A' && a[i]<='Z')
**     *** *** *  ******* * * * * * ***            ** *** ** ** ** *   * *  ** * *** *  *  *  *  *  * *    **  
 ** *** * ** * **    **  **  *  *** **  *********  ** * **   *  *** * ** * *** *      * *    ** *     * *   ** **  *  **  * *  **** **  **** * ** **      ** 
******  ***    *  *  **    ****  *** *** **  *    * * *** ***** **   *   * * * * **  * *****   ** *    *  ** ** 
* *  * * * *  * *  ****** *** *  *** *** * **  **** *
   ***  *  *** * **  * ****  ***  *   ****    * *** *  * *  *    **   *** 
}
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