View Compilation Error

0_0_6094701_25024.cpp: In function `int main()':
0_0_6094701_25024.cpp:3: error: `stdin' undeclared (first use this function)
0_0_6094701_25024.cpp:3: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_6094701_25024.cpp:3: error: `freopen' undeclared (first use this function)
0_0_6094701_25024.cpp:6: error: `scanf' undeclared (first use this function)
0_0_6094701_25024.cpp:9: error: `p' undeclared (first use this function)
0_0_6094701_25024.cpp:10: error: `T_time' undeclared (first use this function)
0_0_6094701_25024.cpp:13: error: `INF' undeclared (first use this function)
0_0_6094701_25024.cpp:23: error: `puts' undeclared (first use this function)