CC  = g++
CXX = g++

CFLAGS   = -g -Wall
CXXFLAGS = -g -Wall -std=c++20

executables = io1 io2 io3

.PHONY: default
default: $(executables)

io1: io1.o

io2: io2.o

io3: io3.o

.PHONY: clean
clean:
	rm -f *~ a.out core *.o $(executables)

.PHONY: all
all: clean default