floating point ==

#include<stdio.h>

int main() {
    double x = 0.0;
    double y = 1.0;
    int i;
    for (i = 0; i < 10; i++) {
        x += 0.1;
    }
    printf("x = %lf, y = %lf\n", x, y);
    if (x == y)
        printf("equal\n");
    else
        printf("not equal\n");
    return 0;
}