View Compilation Error

422716_0_0_9733.cpp: In function `int main()':
422716_0_0_9733.cpp:1: error: `scanf' undeclared (first use this function)
422716_0_0_9733.cpp:1: error: (Each undeclared identifier is reported only once for each function it appears in.)
422716_0_0_9733.cpp:1: error: `puts' undeclared (first use this function)