month_name - 함수 구현 코드

/* month_name : return name of n-th month */

char *month_name(int n)

{

static char *name[] = {

                "Illegal month",

                "January","February","March",

                "April","May,"June","July",

                "August","September","October",

                "November","December"

};

return (n<1 || n>12)?name[0]:name[n];

}