View Compilation Error

0_0_6220238_26775.cpp:3: error: `intb' has not been declared
0_0_6220238_26775.cpp:4: error: ISO C++ forbids declaration of `parameter' with no type
0_0_6220238_26775.cpp: In function `int gcd(int, int)':
0_0_6220238_26775.cpp:5: error: `b' undeclared (first use this function)
0_0_6220238_26775.cpp:5: error: (Each undeclared identifier is reported only once for each function it appears in.)