View Compilation Error

66025_0_16959.cpp:11: error: size of array `a' is too large
66025_0_16959.cpp: In function `void push(xxx)':
66025_0_16959.cpp:22: error: 'struct queue' has no member named 'a'
66025_0_16959.cpp: In function `xxx pop()':
66025_0_16959.cpp:29: error: 'struct queue' has no member named 'a'