View Compilation Error

0_0_8628145_13874.cpp: In function `int main()':
0_0_8628145_13874.cpp:5: error: `scanf' undeclared (first use this function)
0_0_8628145_13874.cpp:5: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_8628145_13874.cpp:8: error: `getchar' undeclared (first use this function)
0_0_8628145_13874.cpp:9: error: `isupper' undeclared (first use this function)
0_0_8628145_13874.cpp:11: error: `islower' undeclared (first use this function)
0_0_8628145_13874.cpp:13: error: `isdigit' undeclared (first use this function)
0_0_8628145_13874.cpp:22: error: `puts' undeclared (first use this function)