Divides a sensorValue by 48 and displays it in the console.

main.c

#include <stdio.h>

float calcSensorValue(int originalValue) {
    // Casting allows us to take an integer and treat it as a float,
    // which means getting decimal numbers instead of whole numbers
    // which would be inaccurate.
    return 48 / (float)originalValue;
}

// Responsible for handling output. 
// sensorValue is the original sensorValue
// result is expected to be the result of sensorValue / 48
// which is defined in the calcSensorValue
void output(int sensorValue, float result) {
    printf("48 / Sensor Value(%i) = %f\n", sensorValue, result);
    // more on printf may be found here: http://www.cplusplus.com/reference/cstdio/printf/
    // Basically where %i is replace with an integer, so we give it the sensor value.
    // %f is replaced with a float, so we give it the result.
    // The order is specified by what comes first in the format string.
}

int main() {
    // This could go in your loop somewhere where the sensorValue is being read
    int sensorValue = 0;
    int i;
    
    for(i=1;i<5;i++) {
        sensorValue = i * 15 ^ i; // Just to make it look interesting for this demo.

        // What you want to do is pass in the sensor value
        // Structering it this way means you can call output as many times
        // as you need but you only have to specify how output works
        // in one, and only one place.
        output(sensorValue, calcSensorValue(sensorValue));
    }
}

main.out