Read a integer N and print a character pattern with N rows.For example if N=5, the pattern isABBCCCDDDDEEEEE

Sure, here is a Python solution for your problem:

def print_pattern(N):
    for i in range(1, N+1):
        print(chr(64 + i) * i)

print_pattern(5)

Here is how it works:

1. We define a function print_pattern that takes an integer N as input.
2. We start a loop that goes from 1 to N (inclusive).
3. Inside the loop, we print a character that is determined by adding i to 64 and converting the result to a character (since the ASCII value of 'A' is 65), and we repeat this character i times.
4. Finally, we call the function with the input 5.

When you run this code, it will print the pattern you described.