Addition of British and Metric Systems

#include <stdio.h>
struct british
{
    float ft;
    float in;
}b1,b2;
struct metric
{
    float m;
    float cm;
}m1,m2;
int main()
{
    float a,b;
    printf("Enter the values in m and cm\n");
    scanf("%f%f",&a,&b);
    m1.m=a;
    m1.cm=b;
    printf("Enter the values in ft and in\n");
    scanf("%f%f",&a,&b);
    b1.ft = a;
    b1.in = b;

    b2.ft = m1.m *3.28;
    b2.in = m1.cm *0.39;

    m2.m = b1.ft *(1/3.28);
    m2.cm = b2.in *(1/0.39);

    printf("The addition is %.2f m and %.2f cm\n", m1.m+m2.m,m1.cm+m2.cm);
    printf("The addition is %.2f ft and %.2f in", b1.ft+b2.ft,b1.in+b2.in);
    return 0;
}
//Output
//Enter the values in m and cm
//5.67
//7.11
//Enter the values in ft and in
//6.7
//2.44
//The addition is 7.71 m and 14.22 cm
//The addition is 25.30 ft and 5.21 in