Find the Area of a Triangle

#include <stdio.h>
int main (void)
{
    double base, height, area;
    float z;
    printf("Enter the Triangle's Base: ");
    scanf("%lf",&base);
    printf("Enter the Height: ");
    scanf("%lf",&height);
    area = 0.5*base*height;
    printf("The area of the Triangle is: %lf\n", area);
    system("pause");
    return 0;
}