int main() { double funcos(double e,double x); double e,x; double s; scanf("%lf%lf",&e,&x); s=funcos(e,x); printf("%lf\n",s); return 0; }
int main(void) { int repeat, ri; double e, sum, x; scanf("%d", &repeat); for(ri = 1; ri <= repeat; ri++) { scanf("%le%le", &e, &x); sum=funcos(e,x); printf("sum = %f\n", sum); } }