"C language and programming" loops and Iterations

loop Statements and iterative algorithms are closely related knowledge, can be zoned for the same module Master , for many problems (such as the most common sequence summation problem), loop + iterative scheme, than the loop nested , be more efficient, clean.

Use of the law: as long as the sequence of the preceding paragraph and latter exist in contact, you can consider the iterative algorithm .

Such as

Example of using a loop + iteration scheme:

Problem Description: Ask for a value of SN=A+AA+AAA+...+AA...A, where a is a number.
For example 2+22+222+2222 (at this time a=2,n=4), A and n are entered by the keyboard.

1#include"stdafx.h"2 3 intMain ()4 {5     intA, N, sum (0), T (2);6scanf_s ("%d%d", &a, &n);7 8      for(inti =0; I < n; i++)9     {TenSum + =T; One          for At = T *Ten+A; -     } -  theprintf"%d", sum); -  -     return 0; -}

=

"C language and programming" loops and Iterations