View Compilation Error

0_0_2906560_4540.cpp: In function `int main()':
0_0_2906560_4540.cpp:15: error: `repeat' undeclared (first use this function)
0_0_2906560_4540.cpp:15: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_2906560_4540.cpp: In function `int repeat(int)':
0_0_2906560_4540.cpp:23: error: `int repeat(int)' used prior to declaration