pepsi.cpp: In function `int min()': pepsi.cpp:9: warning: `int res' might be used uninitialized in this function pepsi.cpp: In function `int max()': pepsi.cpp:21: warning: `int res' might be used uninitialized in this function pepsi.cpp: In function `int main()': pepsi.cpp:34: warning: unused variable `int j' /tmp/cc8y3u6z.o(.text+0x109): In function `main': : the `gets' function is dangerous and should not be used.