Thread: array calculations

I have an array of strings, which allow a user to enter a name for the staff member, the amount they get paid and the hours they have worked. I want to multiply the pay by the hours (pay * hours, eg. $15.90 x 21hrs). I am confused on how to do this. The code I have so far is below.

Code:

#include<stdio.h>
int main (void)
{
	/*declare variables */
	int index1, index2;
	char staff[20][3][50];

	/*Allow a user to enter staff's details*/
	printf("Please enter the staff's name, pay classification (in $) and hours worked.\n");
				
		for (i = 0; i < numRows; i++)
		{
			for (j = 0; j < numCols; j++)
			{ 						
		 	           scanf("%s", staff[i][j]);
			}/*end (for (j = 0; j < numCols; ++j))*/

			putchar('\n');
					
		}/*end (for (i = 0; i < numRows; ++i))*/

printf("\n\n Name: %s, Pay class: %s, Hrs: %s\n", staff[0][0], staff[0][1], staff[0][2]);
	
     return 0;
}