What is the function of strcmp function?

The strcmp function compares the sizes of two strings and returns the comparison result.

The general form is:

i=strcmp(字符串，字符串);

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Among them, both string 1 and string 2 are acceptable is a string constant or variable; i is an integer variable used to store the comparison result. The comparison result is specified as follows:

①If string 1 is less than string 2, the strcmp function returns a negative value;

②String 1 is equal to string 2, and the strcmp function returns zero;

③String 1 is greater than string 2, and the strcmp function returns a positive value.

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