View Compilation Error

0_0_9880671_12126.cpp: In function `int find(int)':
0_0_9880671_12126.cpp:12: error: `s' undeclared (first use this function)
0_0_9880671_12126.cpp:12: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_9880671_12126.cpp: In function `int main()':
0_0_9880671_12126.cpp:32: error: `s' undeclared (first use this function)