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#include 

#include 

int main()

{

    int i;

    for (i = 0; i < 20; i++) {

        printf("------------------------------------------------------\n");

        // printf ( "remainder of 5.3 / 2 is %f\n", remainder (5.3,2) );

        // printf ( "remainder of 18.5 / 4.2 is %f\n", remainder (18.5,4.2) );

        // remainder of 5.3 / 2 is -0.700000

        // remainder of 18.5 / 4.2 is 1.700000

        printf("fmod of 5.3 / 2 is %f\n", fmod(5.3, 2));

        printf("fmod of 18.5 / 4.2 is %f\n", fmod(18.5, 4.2));

        // fmod of 5.3 / 2 is 1.300000

        // fmod of 18.5 / 4.2 is 1.700000

        double param, fractpart, intpart, result;

        int n;

        param = 3.14159265;

        fractpart = modf(param, &intpart);

        printf("%f = %f + %f \n", param, intpart, fractpart);

        // 3.141593 = 3.000000 + 0.141593

        param = 0.95;

        n = 4;

        result = ldexp(param, n);

        printf("%f * 2^%d = %f\n", param, n, result);

        // 0.950000 * 2^4 = 15.200000

        param = 8.0;

        result = frexp(param, &n);

        printf("%f = %f * 2^%d\n", param, result, n);

        // 8.000000 = 0.500000 * 2^4

        param = 50;

        result = frexp(param, &n);

        printf("%f = %f * 2^%d\n", param, result, n);

    }

}