test1(double a,double b,double c)1 double test1 (double a, double b, double c)
2 {
3   return a + b * c;
4 }
test2(double a,double b,double c)5 double test2 (double a, double b, double c)
6 {
7   return - a + b * c;
8 }
9 double a, b, c;
10 
main()11 int main()
12 {
13     test1(a, b, c);
14     test2(a, b, c);
15 }
16