Such as: doublenum1= 6;

double num 2 = 4；

Double precision result = num1/num2;

-

When the decimal number is 0:

int num 1 = 6；

int num 2 = 4；

int result = num 1/num 2； (or doubleresult = num1/num2; )

The reason is that num 1 and num2 are integers, and the number obtained after two integer operations is an integer (for example, 1). If a value is assigned to a floating-point variable, just add .0 after the integer (for example, 1.0).