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Dart program find multiplication of 2 number without * operator

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In this dart program, we will not use multiplication operator i.e. *, Instead we will use iteration/loop technique to find the product of 2 number in dart program without * operator.

Product of 2 number program in dart language – Source Code

void main(){
  int a = 2, b = 3, result;
  result =product(a, b);
  print('$result');
}

// calculate multiplication and return the result
int product(int a,int b){
  int temp =0;
  while(b != 0){
    temp += a;
    b--;
  }
  return temp;
}

output

Program Explanation

In the above dart program,

We habe initialize number to 2 variables a & b, & then passing a,b values to a functon ‘product()’, that will perform multiplication without * operator.

In product() function, we have declared a temp variable as ‘0’.

The while loop, check if ‘b’ variable is not equal to ‘0’, if the while condition is true then execute the iteration loop.

So, inside while loop, we are adding the value of ‘temp’ + ‘a’ variable & then decrement value ‘b’ by -1.

There when b == 0, i.e. b !=0 (condition become false)exit the loop, & therefore we have product of a * b in temp variable, which is returned by product function & this we are print multiplication of 2 numbers on console without using dart arithmetic operator.