#include <math.h> //平方 pow() int a = pow(4,2);// 4的平方=16 //开方 int b = pow(4,0.5);// 4的平方根=2 int c = sqrt(4);// 4的平方根=2 //整数绝对值 int c = abs(b-c); //浮点数绝对值 double d = fabs(b-c); https://blog.csdn.net/u010412858/article/details/82633359
#include <math.h> //平方 pow() int a = pow(4,2);// 4的平方=16 //开方 int b = pow(4,0.5);// 4的平方根=2 int c = sqrt(4);// 4的平方根=2 //整数绝对值 int c = abs(b-c); //浮点数绝对值 double d = fabs(b-c); https://blog.csdn.net/u010412858/article/details/82633359