这个的答案为什么是15

Question

#include

using namespace std;

int f2( int, int );

int f1( int a, int b )

{ int c;

a += a; b += b;

c = f2( a+b, b+1 );

return c;

}

int f2( int a, int b )

{ int c;

c = b % 2;

return a + c;

}

int main()

{ int a = 3, b = 4;

cout << f1( a, b ) << endl;

}

Answer 1

a=3,b=4调用f1方法进入a+=a就等于6，b+=b就是8，放到f2中a+b=14,b+1=9,c=b%2=1，返回a+c=15,回到f1方法返回c=15