View Compilation Error

0_0_1602060_16279.cpp: In function `void input()':
0_0_1602060_16279.cpp:6: error: `cin' undeclared (first use this function)
0_0_1602060_16279.cpp:6: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_1602060_16279.cpp:7: error: `strcmp' undeclared (first use this function)
0_0_1602060_16279.cpp: In function `void output()':
0_0_1602060_16279.cpp:43: error: `strcpy' undeclared (first use this function)
0_0_1602060_16279.cpp:64: error: `cout' undeclared (first use this function)
0_0_1602060_16279.cpp:64: error: `endl' undeclared (first use this function)
0_0_1602060_16279.cpp: In function `int main()':
0_0_1602060_16279.cpp:69: error: `cin' undeclared (first use this function)
0_0_1602060_16279.cpp:69: error: `cout' undeclared (first use this function)
0_0_1602060_16279.cpp:69: error: `endl' undeclared (first use this function)