Question

Write a program to input 3 numbers of integer type and print their LCM.

Answer 1

Answer:

If you can write a program to find LCM of two numbers. Then you can very easily write a program to find LCM of three numbers also , cause lcm(a,b,c)=lcm(a,lcm(b,c)) .

So here's your c program to find LCM of three numbers.

#include<stdio.h>

int lcm(int,int);

int main(){

int a,b,c,l,k;

printf("Enter any three positive integers ");

scanf("%d%d%d",&a,&b,&c);

if(a>b)

l = lcm(a,b);

else

l = lcm(b,a);

if(l>c)

k= lcm(l,c);

else

k= lcm(c,l);

printf("LCM of two integers is %d",k);

return 0;

}

int lcm(int a,int b){

int temp = a;

while(1){

if(temp % b == 0 && temp % a == 0)

break;

temp++;

}

return temp;

}

You can use the same logic to write the program to find LCM of more than three numbers. Try writing and if you face any problem. Then let me know.