C examples

Here are some simple examples of C programs
hello.c
simplest C program
error1.c
some common errors in C
ex1.c
sample: function, math constant, loop, local vars, printf with format
ex2.c
modify ex1 to use scanf and prompting
ex3.c
use of rand [0-1), exp, list other trancendentals and constants
ex4.c
read input from a file: command line, fopen, fscanf, perror, feof
sample.txt
sample input for ex4
ex5.c
example use of an iterative solver
matrix1.c
fixed size matrix