View Compilation Error

0_0_18050370_21370.cpp: In function 'int main()':
0_0_18050370_21370.cpp:32:8: error: 'i' was not declared in this scope
    for(i=0;i<n;i++)
        ^
0_0_18050370_21370.cpp:34:30: error: 'b' was not declared in this scope
     scanf("%lld%d%d",&su[i],&b,&d);
                              ^
0_0_18050370_21370.cpp:34:33: error: 'd' was not declared in this scope
     scanf("%lld%d%d",&su[i],&b,&d);
                                 ^