How to express not equal in C language?

is not equal to the relational operator in C language, its symbol is! =, consisting of two characters, an exclamation point and an equal sign, with no spaces in between.

The usage form is expr1! =expr2. That is, when the values ​​of expr1 and expr2 are not equal, the result is 1 (true), otherwise it is 0 (false).

Recommended: "c Language Tutorial"

"!=" in c language is a relational operator. The relational operators in c language are:

Relational operators are all binary operators, and their associativity is left associative. Relational operators have lower precedence than arithmetic operators and higher than assignment operators. Among the six relational operators, , >= have the same precedence, which is higher than == and !=, and == and != have the same precedence.

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