mod()是 julia 中的一个内置函数，用于在指定的被除数除以除数时返回余数。
Syntax: mod(x, y)
Parameters:
- x: Specified dividend.
- y: Specified divisor.
Returns: It returns remainder when the specified dividend is divided by divisor.
示例 1：
# Julia program to illustrate
# the use of mod() method
# Getting remainder when the specified
# dividend is divided by divisor.
println(mod(0, 3))
println(mod(1, 1))
println(mod(7, 2))
输出：
0
0
1
示例 2：
# Julia program to illustrate
# the use of mod() method
# Getting remainder when the specified
# dividend is divided by divisor.
println(mod(5, 3))
println(mod(10, 2))
println(mod(7.3, 2))
println(mod(1.8, 0))
println(mod(-6, 4))
println(mod(-3, -2))
输出：
2
0
1.2999999999999998
NaN
2
-1