View Compilation Error

0_0_25925362_29947.cpp:5:13: error: size of array 'par' has non-integral type 'double'
 int par[maxa];
             ^
0_0_25925362_29947.cpp:6:13: error: size of array 'pre' has non-integral type 'double'
 int pre[maxa];
             ^
0_0_25925362_29947.cpp:7:13: error: size of array 'vis' has non-integral type 'double'
 int vis[maxa];
             ^
0_0_25925362_29947.cpp:8:13: error: size of array 'dis' has non-integral type 'double'
 int dis[maxa];
             ^
0_0_25925362_29947.cpp:10:18: error: size of array 'first1' has non-integral type 'double'
 int first1[2*maxa];
                  ^