Learning Outcomes

Design and implement a multithreaded program.

Design and implement programs in a Unix environment that open, close, read, and write files.

Demonstrate an understanding of the Unix file system by changing file permissions to allow programs to open, close,

read, and write files.

Design and implement a program that uses pointers and dynamic memory allocation and deallocation.

Use valgrind to find memory leaks in programs. Implement programs that use dynamic memory allocation and deallo$-$

cation and have no memory leaks.

Problem $/$ Exercise

The goal of this project is to give you systems programming experience writing a multithreaded program. Your program

will find all of the diagonal sums equal to an input s$,$ an unsigned long value, in an input text file consisting of a $2$D grid of

n$-$by$-$n digits $(1$ through $9),$ where n $1,$ using t threads, where $1$ t $3.$ Your program should write the output of all of

the diagonal sums equal to s to an output file.