48 lines
932 B
C++
48 lines
932 B
C++
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/*
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* C++ Program to Implement Modular Exponentiation Algorithm
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*/
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#include <iostream>
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#define ll long long
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using namespace std;
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/*
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* Function to calculate modulus of x raised to the power y
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*/
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ll modular_pow(ll base, ll exponent, int modulus)
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{
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ll result = 1;
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while (exponent > 0)
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{
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if (exponent % 2 == 1)
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result = (result * base) % modulus;
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exponent = exponent >> 1;
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base = (base * base) % modulus;
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}
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return result;
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}
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/*
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* Main
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*/
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int main()
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{
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ll x, y;
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int mod;
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cout<<"Enter Base Value: ";
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cin>>x;
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cout<<"Enter Exponent: ";
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cin>>y;
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cout<<"Enter Modular Value: ";
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cin>>mod;
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cout<<modular_pow(x, y, mod);
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return 0;
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}
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/*
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Enter Base Value: 2
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Enter Exponent: 5
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Enter Modular Value: 23
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9
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------------------
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(program exited with code: 1)
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Press return to continue
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