View Compilation Error

0_0_4023641_16431.cpp: In function `int main()':
0_0_4023641_16431.cpp:25: error: `esle' undeclared (first use this function)
0_0_4023641_16431.cpp:25: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_4023641_16431.cpp:25: error: expected `;' before '{' token