View Compilation Error

0_0_11695710_31310.cpp: In function `int main()':
0_0_11695710_31310.cpp:102: error: `RD' undeclared (first use this function)
0_0_11695710_31310.cpp:102: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_11695710_31310.cpp:104: error: `RD3' undeclared (first use this function)
0_0_11695710_31310.cpp:105: error: `FOR' undeclared (first use this function)
0_0_11695710_31310.cpp:105: error: expected `;' before "scanf"