# 0 "main.c"
# 0 "<built-in>"
# 0 "<命令行>"
# 1 "/usr/include/stdc-predef.h" 1 3 4
# 0 "<命令行>" 2
# 1 "main.c"
int add_a_and_b(int a, int b) {
   return a + b;
}

int main() {
   return add_a_and_b(2, 3);
}