30: W.A.P. to check whether input alphabet is a vowel or not using switch case. Program: #include <stdio.h>…

29: W.A.P. to read number until you entered positive numbers. Program: #include <stdio.h> #include <co…

28: W.A.P. to calculate electricity bill.( <=100 RS.4 / units) >100 and <=300 Rs. 4.50 / units >300 and…

27: W.A.P. to decide whether year is leap year or not. Program: #include <stdio.h> #include <conio.h&g…