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C# Program to Convert the Octal String to an Integer Number
  • Last Updated : 22 Jun, 2020

Given an octal number as input, we need to write a program to convert the given octal number into equivalent integer. To convert an octal string to an integer, we have to use Convert.ToInt32() function to convert the values.

Examples:

Input : 202
Output : 130

Input : 660
Output : 432

Convert the item to an integer using base value 8 by using a foreach loop .

Program 1:

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// C# program to convert an array 
// of octal strings to integers
using System;
using System.Text;
  
class Prog {
  
    static void Main(string[] args)
    {
        string[] str = { "121", "202", "003" };
        int num1 = 0;
        try {
  
            // using foreach loop to access each items
            // and converting to integer numbers
            foreach(string item in str)
            {
                num1 = Convert.ToInt32(item, 8);
                Console.WriteLine(num1);
            }
        }
        catch (Exception ex) {
            Console.WriteLine(ex.ToString());
        }
    }
}

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Output:

81
130
3

Program 2:

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// C# program to convert an array 
// of octal strings to integers
using System;
using System.Text;
  
namespace geeks {
  
class Prog {
  
    static void Main(string[] args)
    {
        string[] str = { "111", "543", "333", "607", "700" };
        int num2 = 0;
        try {
  
            // using foreach loop to access each items
            // and converting to integer numbers
            foreach(string item in str)
            {
                num2 = Convert.ToInt32(item, 8);
                Console.WriteLine(num2);
            }
        }
        catch (Exception ex) {
            Console.WriteLine(ex.ToString());
        }
    }
}
}

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Output:

73
355
219
391
448



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