C语言取余符号怎么用?比如:1%12以及3%8结果是多少

2025-03-14 04:57:10
推荐回答(1个)
回答1:

C语言的取余运算符 的用法:将操作数放在取余符号的两边,例如:

#include

int main()

{   int a,b;

a=1%12;

b=3%8;

printf("%d\n%d",a,b);

return 0;

 } 

1%12=1 ,3%8=3。

扩展资料:

取模运算:a % p(或a mod p),表示a除以p的余数。

模p加法:(a + b) % p ,其结果是a+b算术和除以p的余数,也就是说,(a+b) = kp +r,则(a + b) % p = r。

模p减法:(a-b) % p ,其结果是a-b算术差除以p的余数。

模p乘法:(a * b) % p,其结果是 a * b算术乘法除以p的余数。

说明:

1,同余式:正整数a,b对p取模,它们的余数相同,记做 a ≡ b % p或者a ≡ b (mod p)。

2,n % p得到结果的正负由被除数n决定,与p无关。例如:7%4 = 3, -7%4 = -3, 7%-4 = 3, -7%-4 = -3(在java、C/C++中%是取余,在python是模运算,此处%按取余处理)。

参考资料来源:百度百科-模运算

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