C language to calculate the least common multiple of two numbers

藏色散人
Release: 2020-09-14 09:54:14
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The method of calculating the least common multiple of two numbers in C language: list the multiples of the two numbers, compare them one by one, and find the same multiple, that is, the common multiple. The code is [while(1) {if(max%a==0&&max%b==0){lcm=max;break;}】.

C language to calculate the least common multiple of two numbers

LCM (Least Common Multiple) is the least common multiple. The least common multiple of two values ​​is the smallest positive value that is a common multiple of two values.

For example, the multiple of 3 and 4 is 12:

3 →3,6,9,12,15 ...
4 →4,8,12,16,20 ...
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The minimum multiple of both is 12, so the least common multiple of 3 and 4 is 12.

The implementation code of this algorithm is as follows:

#include<stdio.h>int main() {
   int a, b, max, step, lcm;

   a   = 3;
   b   = 4;
   lcm = 0;

   if(a > b)
      max = step = a;
   else
      max = step = b;

   while(1) {
      if(max%a == 0 && max%b == 0) {
         lcm = max;
         break;    
      }

      max += step;
   }

   printf("LCM is %d", lcm);
   return 0;}
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Output:

LCM is 12
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Recommended related video tutorials: "Python Tutorial", "C Video Tutorial

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