debug_run.sh

#!/bin/bash

def_name="$PWD/main.c"
file_name=''
flag=0
reply=''

if [ -f $def_name ]; then
	gcc $def_name
else
	printf "file name? "
	read file_name

	if [ -f "$PWD/$file_name" ]; then
		gcc $file_name
	else
		echo 'file not found'
		flag=1
	fi
fi

# gcc return status
if [ $? == 0 ]; then
	flag=0
else
	flag=1
fi

if [ -f "$PWD/a.out" ]; then
	flag=0
else
	flag=1
fi


if [ $flag -eq 0 ]; then
	printf 'execute a.out? (y/n) '
	read reply
		case $reply in
			y)
				./a.out
			;;
			n)
			;;
			*)
			;;
		esac
fi