How to express C language index |
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How to express index in C language There are two ways to express index in C language: 1. Directly expressed by floating point numbers: 10 to the Nth power is 1e10, or it can also be written as 1e 10 (if it is negative Nth power If so, change the plus sign to a minus sign). Note: e can be either uppercase or lowercase. It should be noted that there must be a number in front of e, otherwise it will be an illegal expression. Recommended learning: "C Language Video Tutorial" 2. Use a power function to express: in c language , finding the yth power of x can be expressed as pow(x,y), so 10 to the Nth power can also be expressed as pow(10,N). Note: The pow function is in the header file math.h, so when calling this function, math.h must be added, that is, #include Copy after loginPrototype: extern float pow(float x , float y); Function: Calculate the y power of x. Description: x should be greater than zero, and the result of the power exponent is returned. For more Introduction to Programming tutorials, please pay attention to the PHP Chinese website! The above is the detailed content of How to express C language index. For more information, please follow other related articles on the PHP Chinese website! |
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