View Compilation Error

1_237_69_4613.cpp: In function `void dfs(int, int)':
1_237_69_4613.cpp:45: error: `typeof' undeclared (first use this function)
1_237_69_4613.cpp:45: error: (Each undeclared identifier is reported only once for each function it appears in.)
1_237_69_4613.cpp:45: error: expected `;' before "j"
1_237_69_4613.cpp:45: error: `j' undeclared (first use this function)
1_237_69_4613.cpp: In function `int main()':
1_237_69_4613.cpp:54: error: `typeof' undeclared (first use this function)
1_237_69_4613.cpp:54: error: expected `;' before "i"
1_237_69_4613.cpp:54: error: `i' undeclared (first use this function)
1_237_69_4613.cpp:61: error: expected `;' before "i"