View Compilation Error

665719_0_0_17761.cpp:1: error: `vector' has not been declared
665719_0_0_17761.cpp:1: error: expected `,' or `...' before '<' token
665719_0_0_17761.cpp:3: error: ISO C++ forbids declaration of `parameter' with no type
665719_0_0_17761.cpp: In function `int maxVal(int, int)':
665719_0_0_17761.cpp:9: error: `a' undeclared (first use this function)
665719_0_0_17761.cpp:9: error: (Each undeclared identifier is reported only once for each function it appears in.)
665719_0_0_17761.cpp:13: error: expected `;' before "else"