# 소수점 반올림 간단 예제

#include<stdio.h>
#include<conio.h>
#include<stdio.h>

int gcd(int m, int n) {
    if (m<=0) return 0;
    if (n<=0) return 0;

    while(m != n}){
        if (m>n) m = m - n;
        else n = n - m;
    }

    return n;
}

void main(){
    float num,tmp;

    printf("Enter a float Number : ");
    scanf("%f",&num);

    tmp=(num*10);
    tmp=(tmp-(int)tmp)/10;

    if(tmp>=0.05) num=num+(0.10-tmp);

    printf("%fn",num);
}

void main(){
    int a,b;

    printf("Enter a first Number : ");
    scanf("%d",&a);

    printf("Enter a second Number : ");
    scanf("%d",&b);

    printf("GCD is %d",gcd(a,b));
    getch();
}