View Compilation Error

0_0_24510640_9606.cpp: In function 'void Floyd()':
0_0_24510640_9606.cpp:368:17: error: 'vertex_number' was not declared in this scope
     for (k=0; k<vertex_number; k++) {
                 ^
0_0_24510640_9606.cpp:371:22: error: 'graph' was not declared in this scope
                 if ((graph[i][k]==-1) || (graph[k][j]==-1))
                      ^
0_0_24510640_9606.cpp:373:22: error: 'graph' was not declared in this scope
                 if ((graph[i][j]==-1) || (graph[i][j] > graph[i][k]+graph[k][j])) {
                      ^
0_0_24510640_9606.cpp:375:21: error: 'path' was not declared in this scope
                     path[i][j] = k; /* 最短路径*/
                     ^