SO TODAY WE WILL BE SEEING ABOUT HOW TO CHECK IF THE ENTERED YEAR IS A LEAP YEAR OR NOT SO THAT WE CAN HAVE A CLEAR IDEA ABOUT HOW TO USE THE PROGRAMING SKILLS TO MAKE THE PROGRAMS SO LETS GET STARTED #include<stdio.h> #include<conio.h> void main() { int a; clrscr(); printf("please enter a year"); scanf("%d"&a); if(a%4==0 && a%400!=0 && a) printf("The entered yeaar is a leap year"); else printf("The entered year is not a leap year"); getch(); } SO NOW WE WILL SE THE LOGIC BEHIND THE PROGRAM AS WE KNOW THAT THE FIRST COMES THE HEADER FILE THEN THE MAIN FUNCTION NOW THERE IS A DECLERATION OF VARIABLE (a) THE (CLRSCR) IS A FUNCTION WHICH WILL CLEAR THE SCREEN IT IS USEFULL TO CLEAR THE SCREEN IS WE HAVE DONE ANY PREVIOUS CODINGS OUTPUT.NOW THE PRINTF STATEMENT IS USD FOR THE PRINTING THE TEXT TO GIVE THE USER A CLEAR CUT MESSSAGE THAT HE WANTS TO ENTER A YEAR.THE SCANF FUNCTION IS FOR T...