Display and find the sum of the series [1+11+111+1111+11111+…..]

Display and find the sum of the series [1+11+111+1111+11111+…..]

Input:

Enter the range:

Output:

The sum of numbers in the series upto range 3 is 123

Implementation:

#include <stdio.h> int main(void) { int n=1,i; int range,sum=0; printf("Enter the range:\n"); scanf("%d",&range); for(i=0;i<range;i++) { sum += n; n = (n*10)+1; } printf("The sum of numbers in the series upto range %d is %d",range,sum); return 0; }