Question

I need help with this program. Im trying to use C++ programming language.

I want to include my ifstream SimpleCal6.txt and my outFile.

CS 317

Calculator Program

Write a program to input three values, two floats and an operator print out what were read and the resulting evaluation. The operators to handle are +, -, *, / and ^. The floats are one or more digits in length. The last input is sentinel value 0 + 0;

Read a float, char, float for input. cin >> v1 >> opchar >> v2;

Input File: SimpleCal6.txt

Example input:

          78.2 + 9.0

Example Output:

          78.2 + 9.0 = 87.2

          ...

These are the data for SimpleCal6.txt

78.2 + 99.0
84.3 – 5.2
605.24 * 34.72
999.3 / 333.9
1010.10 + 1010.10
-5.5 * -3.8
5.89 *  .00
0.04 - 0.09
-32.6 ^ 8.0
5.0 ^ 6.0
7.8234 - 7.8234
0.12 ^ 0.045
567.89 - 345.23

Answer 1

Main.cpp

#include <iostream>
#include <fstream>
#include <math.h>

using namespace std;

main()
{
float varOne;
float varTwo;
char operatorType;
float value = 0.0;
ifstream inputFile;
inputFile.open("SimpleCal6.txt");
while (inputFile >> varOne >> operatorType >> varTwo) {
if(operatorType == '+')
{
value = varOne + varTwo;
}
else if(operatorType == '-')
{
value = varOne - varTwo;
}
else if(operatorType == '*')
{
value = varOne * varTwo;
}
else if(operatorType == '^')
{
value = pow(varOne, varTwo);
}
else if(operatorType == '/')
{
value = varOne / varTwo;
}
cout << varOne << " " << operatorType << " " << varTwo << " = " << value << endl;
}
inputFile.close();
}

Input file

78.2 + 99.0
84.3 - 5.2
605.24 * 34.72
999.3 / 333.9
1010.10 + 1010.10
-5.5 * -3.8
5.89 * .00
0.04 - 0.09
-32.6 ^ 8.0
5.0 ^ 6.0
7.8234 - 7.8234
0.12 ^ 0.045
567.89 - 345.23

Output

78.2 + 99 = 177.2
84.3 - 5.2 = 79.1
605.24 * 34.72 = 21013.9
999.3 / 333.9 = 2.99281
1010.1 + 1010.1 = 2020.2
-5.5 * -3.8 = 20.9
5.89 * 0 = 0
0.04 - 0.09 = -0.05
-32.6 ^ 8 = 1.27568e+12
5 ^ 6 = 15625
7.8234 - 7.8234 = 0
0.12 ^ 0.045 = 0.908998
567.89 - 345.23 = 222.66