View Compilation Error

0_0_5228389_6368.cpp: In function `int qry(PII)':
0_0_5228389_6368.cpp:63: error: `ml' undeclared (first use this function)
0_0_5228389_6368.cpp:63: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_5228389_6368.cpp:78: error: expected `;' before '}' token