Thread: Convert string to float?

I've got two floats but they're as strings. how do i get this code to work. I don't know how to convert them so i can compare them. it's read from standard input that's why they're char*. The code below is just an example, i know it's not goin2 work lol. Please tell me how to convert so i can compare, thanx

Code:

char* f1 = 3.2;
char* f2 = 4.53;

if(f1 > f2) {

cout << "F1 is bigger" <<endl;

}else {

cout <<F2 is bigger" <<endl;

}