Answer / bashar khawaldeh

int arr[8];
int sum = 0;
int n = sizeof(arr) / sizeof(arr[0]);//24/4=6
for (int i = 0; i < n; i++) {
cout << "enter binary number
" << "index " << i << ":";
cin >> arr[i];
}

for (int i = 0; i < n; i++) {

if (arr[i] == 1) {
sum += pow(2,i);
}
}
cout << sum << endl;

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how tally is useful?

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