1 int main() {
2     double a = 2.345;
3     printf("%.2f\n", a);
4     return 0;
5 }

1 int main() {
2     double a = 2.345;
3     a = int(a * 100) / 100.0;
4     printf("%.2f\n", a);
5     return 0;
6 }