sprawdz.sh

#!/bin/bash

mkdir -p z-return0 bez-return0

cat > z-return0/prog.c <<EOF
#include <stdio.h>

int main(){
    https://www.wykop.pl/
    printf("Hello world\n");
    return 0;
}
EOF

cat z-return0/prog.c | grep -v "return 0" > bez-return0/prog.c

for a in bez-return0 z-return0
do
    cd $a
    gcc --pedantic prog.c
    gcc -S prog.c
    cd ..
done

diff -y -W 80 *-return0/prog.c

md5sum *-return0/a.out
md5sum *-return0/prog.s

echo "Pozdrawiam."