I can not figure out how to have a correct result for area of a triangle using two points.

My code in C is producing an output of 0.00000

ONLY ONE REQUIRMENT the values must be entered from the command line.

#include

#include

int main(int argc, char **argv) {

double area, base, height;

scanf("%lf", &base);

scanf("%lf", &height);

area = 1/2 * (base * height);

printf("The area is %f square units. ", area);

return 0;

}