View Compilation Error

0_0_25672340_32437.cpp: In function 'int main()':
0_0_25672340_32437.cpp:13:56: error: 'gcd' cannot be used as a function
     for(i=1;i<=m;i++)for(j=1;j<=m;j++)gcd[i][j]=gcd(i,j);
                                                        ^