Thread: help with arrays and equation

I'm trying to convert values of an array from C to F.
So far I have the user inputting values for each element (15 in the array which is defined). And I've figured out how to print each element, im just not sure how to apply the equation F = 32 + C*(180.0/100.0) so I can convert each element.

Code:

#include <stdio.h>#include <stdlib.h>
#define COUNT 15


int main(void){


	int C, i;
	int array[COUNT];
	float F;
	printf("Enter 15 temperatures in Celsius\n");
	for(i=0;i<COUNT;i++){
	scanf("%d", &array[i]);
	}


    for(i=0;i<COUNT;i++){
        printf("%d\n", array[i]);
    }

Originally Posted by Ktulu

You have to decide if you want to process decimal numbers. Both source and destination have to match type.

A hint would be: If you can calculate F when C is given, as shown in your equation, it's your job to display this information to the user (reading the output from a CLI).

I'm not so worried about using decimals or not, as I can cast the results right?
Just confused how I would apply the equation to each element in the array and then using the same code i have currently to output the elements

Hi

If you wanted to keep what you have... and you can work out float or int...and formatting...
You could always do something like... array[i] = 32 + (array[i]*1.8);
The expression gets solved before being assigned to the same array element that was holding the C deg value.

Originally Posted by JohnGM

Hi

If you wanted to keep what you have... and you can work out float or int...and formatting...
You could always do something like... array[i] = 32 + (array[i]*1.8);
The expression gets solved before being assigned to the same array element that was holding the C deg value.

Tried this but got 0.00 for all the elements in my array

Code:

    printf("All temperatures processed\n");
    for(i=0;i<COUNT;i++){
        array[i] = 32 + (array[i]*1.8);
        printf("%.2lf\n", array[i]);

Code:

printf("%.2lf\n", array[i]);

You created an array of ints. You are using the wrong conversion specifier to display them.

thanks all. I figured it out
I realized i did not have a second array for the converted values to be stored.