View Compilation Error

28117_0_17556.cpp: In function `int main()':
28117_0_17556.cpp:6: error: stray '\163' in program
28117_0_17556.cpp:6: error: stray '\172' in program
28117_0_17556.cpp:6: error: expected init-declarator before "a1"
28117_0_17556.cpp:6: error: expected `,' or `;' before "a1"
28117_0_17556.cpp:7: error: `b' undeclared (first use this function)
28117_0_17556.cpp:7: error: (Each undeclared identifier is reported only once for each function it appears in.)
28117_0_17556.cpp:8: error: `a1' undeclared (first use this function)
28117_0_17556.cpp:9: error: `b1' undeclared (first use this function)
28117_0_17556.cpp:15: error: `lcm' undeclared (first use this function)