Question

3. [30pts] Determine the following information about a value passed in as a parameter.
(a) Is the value a multiple of 7, 11 or 13? (b) The sign of the value (-1 if it is negative, 0 if it is 0 and 1 if the value is positive).
You should write a function with three type int parameters, one input parameter (the value) and two other output parameters. The function should send back the answers to the two questions above in the output parameters of the function. Some sample input data might be: 104 3773 13 121 77 30751.

Answer 1

$\color{blue}\underline{Solution.c:}$

#include<conio.h>
#include<stdio.h>

void checkInput(int value, int *multiple, int *sign){
   if(value%7 == 0 && value%11 == 0 && value%13 == 0){
       *multiple = 1;
   }
   else{
       *multiple = 0;
   }
   if(value == 0){
       *sign = 0;
   }
   else if(value<0){
       *sign = -1;
   }
   else{
       *sign = 1;
   }
}

int main() {
   int value, multiple, sign;
   printf("Enter value: ");
   scanf("%d",&value);
   checkInput(value, &multiple, &sign);
   if(multiple == 1){
       printf("%d is multiple of 7, 11 or 13\n",value);  
   }
   else{
       printf("%d is not a multiple of 7, 11 or 13\n",value);  
   }
   printf("Sign of the value is: %d\n",sign);
  
   getch();
   return 0;
}

$\color{red}\underline{Output1:}$

$\color{red}\underline{Output2:}$