Untitled

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

double runAddition(double x, double y);
double runSubstraction(double x, double y);
double runMultiplication(double x, double y);
double runDivision(double x, double y);
double runPotency(double x, double y);
double runSquareRot(double x, double y);
double runReverse(double x, double y);

int main(void) {

    char operator;
    double start = 0.0;
    double input;

    while (1) {
        printf("\nEnter operator, and an optional operand: \n");
        scanf(" %c %lf", &operator, &input);

        if (operator == '+') {
            start = runAddition(start, input);
            printf("Result so far is %lf", start);
        }
        else if (operator == '-') {
            start = runSubstraction(start, input);
            printf("Result so far is %lf", start);
        }
        else if (operator == '*') {
            start = runMultiplication(start, input);
            printf("Result so far is %lf", start);
        }
        else if (operator == '/') {
            start = runDivision(start, input);
            printf("Result so far is %lf", start);
        }
        else if (operator == '^') {
            start = runPotency(start, input);
            printf("Result so far is %lf", start);
        }
        else if (operator == '#') {
            start = runSquareRot(start, input);
            printf("Result so far is %lf", start);
        }
        else if (operator == 'q') {
            return 0;
        }
    }
}

double runAddition(double x, double y) {
    double result = x + y;
    return result;
}

double runSubstraction(double x, double y) {
    double result = x - y;
    return result;
}

double runMultiplication(double x, double y) {
    double result = x * y;
    return result;
}

double runDivision(double x, double y) {
    double result = x / y;
    return result;
}

double runPotency(double x, double y) {
    double result = pow(x, y);
    return result;
}

double runSquareRot(double x, double y) {
    double result = sqrt(x);
    return result;
}