View Compilation Error

0_0_32364711_31223.cpp: In function 'double Getgraph()':
0_0_32364711_31223.cpp:50:1: error: expected primary-expression before '%' token
 %
 ^
0_0_32364711_31223.cpp:50:1: error: expected primary-expression at end of input
0_0_32364711_31223.cpp:50:1: error: expected '}' at end of input