View Compilation Error

172727_0_24620.cpp: In function `int main()':
172727_0_24620.cpp:5: error: `scanf' undeclared (first use this function)
172727_0_24620.cpp:5: error: (Each undeclared identifier is reported only once for each function it appears in.)
172727_0_24620.cpp:37: error: `printf' undeclared (first use this function)