Record an egg ache for a long time and a bad place in C language

In the process of learning, found a sense of C language design is not very good place, that is, when the free memory failure. I caused the error because the dynamic memory is out of bounds, the compiler has to give the free () function error, It feels like a little unbearable. should be in the design of the first time to expose the problem to that crossed the place, otherwise it will make people inexplicable, difficult to find mistakes, for this waste time and energy.

The other is about the TXT file read problem, I learned a good, each time the operation, must remember, the current TXT file is what code, or else there is a mistake to let a person some touch the mind, completely affect the learning mood. Pay attention to a record.

Record an egg ache for a long time and a bad place in C language