package main import "core:fmt" main :: proc() { program := "+ + * 😃 - /" accumulator := 0 for token in program { switch token { case '+': accumulator += 1 case '-': accumulator -= 1 case '*': accumulator *= 2 case '/': accumulator /= 2 case '😃': accumulator *= accumulator case: // Ignore everything else } } fmt.printf("The program \"%s\" calculates the value %d\n", program, accumulator) }