C program: complete the calculator function to make the main program work
C program: complete the calculator function to make the main program work
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Question
100%
C

Transcribed Image Text:Calculator functions
Main
calculator.h
int main() {
#include "calculator.h"
float left, right;
#ifndef CALCULATOR_H
char op;
#define CALCULATOR_H
int isvalid - 1;
float add(float left, float right) {
do {
float add(float , float );
/* YOUR CODE HERE */
printf("Enter a mathematical expression <NumberoperatorNumber>\n");
float subtract(float , float );
return 0.0f;
printf("Enter any number twice to quit! \n");
printf(">> ");
float multiply(float , float );
}
scanf("%f%c%f", &left, &op, &right);
float divide(float , float );
printf("Your input is Xf %c %f \n", left, op, right);
int power(int , int );
float subtract(float left, float right) {
switch (op) { // +, -, *, /, ^
case '+':
/* YOUR CODE HERE */
#endif //CALCULATOR_H
printf("The result is Xe.2f\n", add(left, right));
return 0.0f;
break;
}
case '-':
printf("The result is X8.2f\n", subtract(left, right));
break;
float multiply(float left, float right) {
/* YOUR CODE HERE */
case *':
printf("The result is X8.2f\n", multiply(left, right));
return 0.0f;
break;
}
case '/':
printf("The result is Xe.2f\n", divide(left, right));
break;
float divide(float left, float right) {
/* YOUR CODE HERE */
case 'A':
printf("The result is Xe.2f\n", (float) power((int) left, (int) right));
return 0.0f;
break;
}
default:
puts("Invalid Operand!");
int power(int base, int exponent) {
isvalid - e;
/* YOUR CODE HERE */
return 0;
} while (isvalid);
}
printf("Exiting...bye!");
return e;
}
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