View Compilation Error

0_0_7651648_1933.cpp: In function `int main()':
0_0_7651648_1933.cpp:38: error: `REP' undeclared (first use this function)
0_0_7651648_1933.cpp:38: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_7651648_1933.cpp:38: error: expected `;' before "scanf"
0_0_7651648_1933.cpp:39: error: expected `;' before "scanf"