View Compilation Error

0_0_29597239_22767.cpp: In function 'int gdc(int, int)':
0_0_29597239_22767.cpp:9:2: error: 'nbsp' was not declared in this scope
     return a==0?b:gdc(b%a,a);
  ^
0_0_29597239_22767.cpp: In function 'int main()':
0_0_29597239_22767.cpp:15:2: error: 'nbsp' was not declared in this scope
     int n;
  ^
0_0_29597239_22767.cpp:22:82: error: 'i' was not declared in this scope
             scanf("%d",&a[i]);
                                                                                  ^
0_0_29597239_22767.cpp:30:78: error: 'i' was not declared in this scope
             k=gdc(t,a[i]);
                                                                              ^