#include <stdio.h> #include <math.h> float triangleArea (float a ,float b,float c); int main(void) { float a , b, c ; scanf("%f %f %f", &a , &b, &c); printf("your area %f" , triangleArea( a , b, c)); return 0; } float triangleArea (float a ,float b,float c) { float s = (a + b + c) / 2 ; float m = s *(s- a) * (s -b) * (s -c) ; return pow(m , .5) ; }