Calculation of integrals I_n = \int_0^1 x^n e^{x-1} dx using recurrence relation
(see lecture7)


integrals.c  - original program from Lect. 7

               to compile: 'make integrals' or 'gcc integrals.c -o integrals -lm'

               to run: ./integrals

integrals2.c - same as integrals.c but stores the values of integrals in an array

               to compile: 'make integrals2' or 'gcc integrals2.c -o integrals2 -lm'

               to run: ./integrals2

integrals3.c - change the direction of recursion; print the results of the 'stable'
               and 'unstable' calculations side by side

               to compile: 'make integrals3' or 'gcc integrals3.c -o integrals3 -lm'

               to run: ./integrals3


Arrays in C


array1.c  - 

               to compile: 'make array1' or 'gcc array1.c -o array1 -lm'

               to run: ./array1