View Compilation Error

0_0_18775867_20158.cpp: In function 'bool isprime(int)':
0_0_18775867_20158.cpp:8:8: error: 'rtue' was not declared in this scope
 return rtue;
        ^
0_0_18775867_20158.cpp: In function 'int main()':
0_0_18775867_20158.cpp:31:1: error: expected '}' at end of input
 }
 ^