1 to 100 random in words

how to get a number form 0 to 50
repeat until the result is not negative:
roll first dice multiply times 10 then add the second roll of dice minus 11

how to get a number 0 to 100
	A= Random_Number_0_to_50;
	B= Random_Number_0_to_50;
	if B =0 then B=1
	Random_number_Zero_to_100=A+B