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**main.cpp**main.cpp

CC = g++
CFLAGS = -Wall -Werror -std=c++11 -pedantic -O3

SRCS = run.cpp CovidDB.cpp main.cpp
OBJS = $(SRCS:.cpp=.o)

TARGET = main

all: $(TARGET)

$(TARGET): $(OBJS)
    $(CC) $(CFLAGS) $(OBJS) -o $(TARGET)

%.o: %.cpp
    $(CC) $(CFLAGS) -c $< -o $@

clean:
    rm -f $(OBJS) $(TARGET)

```

CC = g++
CFLAGS = -Wall -Werror -std=c++11 -pedantic -O3

SRCS = run.cpp CovidDB.cpp main.cpp
OBJS = $(SRCS:.cpp=.o)

TARGET = main

all: $(TARGET)

$(TARGET): $(OBJS)
    $(CC) $(CFLAGS) $(OBJS) -o $(TARGET)

%.o: %.cpp
    $(CC) $(CFLAGS) -c $< -o $@

clean:
    rm -f $(OBJS) $(TARGET)

This is a follow up question to Date Checking in C++