What is the output?

main(){int x=4,y,z;y=--x;z=x--;printf("\n %d %d %d",x,y,z);}main(){int x=4,y=3,z;z=x-- -y;printf("\n %d %d %d",x,y,z);}main(){int i;for(i=1;i<=5;printf("\n %d",i);i++;}