``````#include <stdio.h>
#include <math.h>

// I store integer in integer "meters" and addresses are stored in *pointers
void metersToFeetAndInches (double meters, unsigned int *ftPtr, double *intPtr) {

double feet; // 9 feet
double fractionalReturn; // 0.84299 use this to calculate inches

// convert the number of meter into a flating point number of feet
double rawFeet = meters * 3.281; //
fractionalReturn = modf(rawFeet, &feet);

//store the number of feet in as unsigned int in main function
// to do this we use its address that was passed and store in pointer
if (ftPtr){ // Check if its not NULL
printf("Storing %f to the address %p\n", feet, ftPtr);
*ftPtr = feet;
}

// Calculate inches
double fractionalFoot = rawFeet - feet;
double inches = fractionalFoot * 12.0;

// store the number of inches at the supplied address
if(intPtr){ // check if its not NULL
printf("Storing %.2f inches to the address %p\n", inches, intPtr);
*intPtr = inches;
}
}

// Pass by reference
int main(int argc, const char * argv[])
{

double aMeters = 3.0;
unsigned int aFeet = 0;
double aInches = 0;

// Here I pass value of aMeters and addresses of aFeet and aInches as arguments
metersToFeetAndInches(aMeters, &aFeet, &aInches);
printf("%.1f meters is equal to %d feet and %.1f inches.\n", aMeters, aFeet, aInches);

return 0;
}``````