View Compilation Error

201838_0_23757.cpp: In function `int main()':
201838_0_23757.cpp:7: error: `s' undeclared (first use this function)
201838_0_23757.cpp:7: error: (Each undeclared identifier is reported only once for each function it appears in.)
201838_0_23757.cpp:7: error: expected `;' before "return"