I need help completing this code in C programming. It's a calendar and I don't understand why I need arguments. This is supposed to calculate the leap year. This is the format that needs to be written

#include #include #include // y > 1752, 1 >= m >= 12 int dow(int y, int m, int d) { static int t[] = {0, 3, 2, 5, 0, 3, 5, 1, 4, 6, 2, 4}; y -= m < 3; return (y + y/4 - y/100 + y/400 + t[m-1] + d) % 7; } void calmonth(int m, int y) { // complete me } void calyear(int y) { // complete me } int main(int argc, char *argv[]) { int i, M=-1, Y=-1; // process arguments  no error checks implemented for (i=1; i