View Compilation Error

0_0_18027280_5237.cpp: In function 'int Miller_Rabin(u64)':
0_0_18027280_5237.cpp:77:10: error: 'i' was not declared in this scope
     for( i=0;i<MAX;++i)
          ^
0_0_18027280_5237.cpp: In function 'u64 Pollard_Rho(u64)':
0_0_18027280_5237.cpp:104:10: error: 'i' was not declared in this scope
     for( i=1;i<MAX;i ++)
          ^
0_0_18027280_5237.cpp: In function 'int main()':
0_0_18027280_5237.cpp:167:17: error: 'j' was not declared in this scope
             for(j=0;j<2*f1[i]+1;++j)
                 ^