View Compilation Error

0_0_18733634_10167.c:4:6: error: variably modified 'w' at file scope
 char w[100][MAX],t[MAX];
      ^
0_0_18733634_10167.c:4:18: error: variably modified 't' at file scope
 char w[100][MAX],t[MAX];
                  ^
0_0_18733634_10167.c:5:5: error: variably modified 'ans' at file scope
 int ans[MAX],f;
     ^
0_0_18733634_10167.c:6:5: error: variably modified 'nex' at file scope
 int nex[100][MAX];
     ^