View Compilation Error

0_0_25525694_28151.c: In function 'main':
0_0_25525694_28151.c:4:2: error: 'nbsp' undeclared (first use in this function)
     int n, i, j, t, max, num[1000];
  ^
0_0_25525694_28151.c:4:2: note: each undeclared identifier is reported only once for each function it appears in