Kindly write the following programs in DEV C++: - 1.Write a computer program to print the following triangle. * ** *** **** ***** ****** ******* ******** ********* ********** 2.Write a program to...

Kindly write the following programs in DEV C++: - 1.Write a computer program to print the following triangle. * ** *** **** ***** ****** ******* ******** ********* ********** 2.Write a program to perform the following mathematical operation. M = . 3.Write a computer program that accepts 2 integers from keyboard and compare them. 4.Write a program to calculate the average Marks of a student who is taking 4 subjects by using for loop and array. 5.Write a program to swap two characters by using pointers.