1. Modify the program of Exercise 8.16 to print the character O instead of S at the centre of the square as shown below. 2. Given a set of 10 two-digit integers containing both posi tive and negative...

the square as shown below.

2. Given a set of 10 two-digit integers containing both posi tive and negative values, write a

program using for loop to compute the sum of all positive values and print the sum and the

number of values added. The program should use scan f to read the values and terminate

when the sum exceeds 999. Do not use go to statement.