baffling printf error in c++

[abhdkjsd]

Hello to all,
I have a baffling problem with printf in Borland c++ v5.2 as follows:
If I use the command:
Printf(“ ”);
Before the condition :
If(b[loc[pn][0]][0] == loc[pn][0]){
….
}
My code works correctly, but if I delete it this error occurs:
“Threat stopped access violation at 0x403492 read of address … “
Have every one experienced a similar problem or could help me?

[weaknessforcats]

I don't the problem is due to printf.

I think it's because loc[pn][0]][0] == loc[pn] is being used as an array index. Array indexes must be integers. The result of operator== is true or false. While these may display as 1 and 0, it doesn't mean the values are integers.

Do something like:

if (loc[pn][0]][0] == loc[pn])
{
   use b[1] etc...
}
else
{
   use b[0] etc...
}

I think you are in the land of indeterminate results and that printf is misleading you.