Tf overuse of global variables can lead to problems.

True

Explanation:

Global Variables

Variables which are declared outside any function. Any function can use these variables,they are automatically initialized to zero(0).They are generally declared before main() function.

Problems

We can modify the global variable in any function as any function can access it. So it is hard to figure out which functions read and write these variables. Various problems are-

answer; /// i believe ist (al shugart);