#include #include static float h_somme(float x, float y); int main(void) { printf("h_somme(2.0, 4.0) = "); printf("%f\n", h_somme(2.0, 4.0)); return EXIT_SUCCESS; } static float h_somme(float x, float y) { return 1.0 / (1.0/x + 1.0/y); }