**In this program we will write code to find the number of integers which are divisible by 3 in the given range.**

- Source Code

/* * C program to find the number of integers divisible by * 3 between the given range n1 and n2. where n1 < n2. * * Also find the sum of all these integer numbers which are divisible * by 3 and display the total. */ #include <stdio.h> void main() { int i, n1, n2, count = 0, sum = 0; printf("Enter the value of n1 and n2 \n"); scanf("%d %d", &n1, &n2); /* Count the number and compute their sum*/ printf("Integers divisible by 3 are \n"); for (i = n1; i < n2; i++) { if (i % 3 == 0) { printf("%d,", i); count++; sum = sum + i; } } printf("\n Number of integers divisible by 3 between %d and %d = %d\n", n1, n2, count); printf("Sum of all integers that are divisible by 3 = %d\n", sum); }

- Runtime

Case:1 Enter the value of n1 and n2 10 15 Integers divisible by 3 are 12,15 Number of integers divisible by 3 between 10 and 15 = 2 Sum of all integers that are divisible by 3 = 27 Case:2 Enter the value of n1 and n2 1 10 Integers divisible by 3 are 3,6,9 Number of integers divisible by 3 between 1 and 10 = 3 Sum of all integers that are divisible by 3 = 18