View Compilation Error

0_0_11477958_12503.cpp: In function `double calculate(std::string, double*)':
0_0_11477958_12503.cpp:108: error: expected primary-expression before '%' token
0_0_11477958_12503.cpp:108: error: expected `;' at end of input
0_0_11477958_12503.cpp:108: error: expected `}' at end of input