Driver program to test above function
static void Main ( ) { int test_no = 64 ; if ( isPowerOfFour ( test_no ) > 0 ) Console . WriteLine ( " { 0 } ▁ is ▁ a ▁ power ▁ of ▁ 4" , test_no ) ; else Console . WriteLine ( " { 0 } ▁ is ▁ not ▁ a ▁ power ▁ of ▁ 4" , test_no ) ; } }