# Minus 10 from each element in a valarray : valarray « Valarray « C++

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Minus 10 from each element in a valarray
 ```    #include  #include  #include  using namespace std; int main() {   valarray v(10);   for(int i=0; i<10; i++)       v[i] = i;   cout << "Original contents: ";   for(int i=0; i<10; i++)     cout << v[i] << " \n\n";   v = v - 10;   for(int i=0; i<10; i++)     cout << v[i] << " \n\n";   cout << endl; } /*  Original contents: 0 1 2 3 4 5 6 7 8 9 -10 -9 -8 -7 -6 -5 -4 -3 -2 -1  */           ```
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 1 Create valarray of bool value by using comparison operator on another valarray 2 Use valarray + valarray to double the value for each element in valarray 3 Do sqrt for all elements in a valarray 4 Print three-dimensional valarray line-by-line 5 Print valarray as two-dimensional array 6 valarray with double value inside