View Compilation Error

0_0_13658877_15959.cpp: In function 'int main()':
0_0_13658877_15959.cpp:150:4: error: 'half' was not declared in this scope
    half.p[i].input();
    ^
0_0_13658877_15959.cpp:151:3: error: 'half' was not declared in this scope
   half.n = 0;
   ^