void printRow(int begin, int end);
// prints a row of numbers from begin to end (inclusive),
// separated by a space and ends with a new line.
For example, printRow(2, 5) will print out the following to the screen:
2 3 4 5
Notice that each digit is preceded by a space and after printing the row there is a new line printed
after 5.
Nothing but a new line should be printed when begin > end.
1 2 3 4
void printRow(int begin, int end){
int i;
for(i=begin;i<=end;i++)
}