The algorithm as :
Step 1: Begin.
Step 2: Read N.
Step 3 : Let a = 1, b = 1 Step 4 : Print a, b.
Step 5 : ctr = 2.
Step 6 : c = a + b.
Step 7 : a = b.
Step 8 : b = c.
Step 9 : ctr = ctr + 1.
Step 10: If ctr < N then repeat steps 6 to 9.
Step 11: Stop.