#import <stdio.h>

int main(){
        printf("Hi!n");
        return 0;
}

gcc myapp.c

./a.out
#which outputs: Hi!

gcc myapp.c -o myapp
./myapp
# output: Hi!

gcc hello.c

gcc -o hello hello.c

gcc -Wall -Wextra -o hello hello.c

sudo apt-get install gcc build-essential

gcc myprogram.c -o myprogram

./myprogram

gcc <fileName.c>