View Compilation Error

0_0_11114885_9687.cpp: In function `void top_sort(int)':
0_0_11114885_9687.cpp:23: error: `count' undeclared (first use this function)
0_0_11114885_9687.cpp:23: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_11114885_9687.cpp: In function `int main()':
0_0_11114885_9687.cpp:57: error: `count' undeclared (first use this function)