C Language One day

What's the C language? c language = number + English.

A byte in a computer is a unit of measurement in which computer information technology is used to measure storage capacity and transmission capacity, and one byte equals a 8-bit binary number.

In the C language, int is an integer placeholder of 2 bytes or 4 bytes. (the output is represented as%d)

Float is a single-precision floating-point placeholder of 4 bytes. (the output is represented as%f).

Char is a byte placeholder for a character (represented as%c in the output).

The representation of a variable in the C language is represented by an alphanumeric and an underscore.

C Language Requirements: variables must be defined in use, not allowed to use one side of the definition, must be written at the front, or will error.

The simple C language output is as follows

int Main (void) {        int  a,b,c;        scanf ("%d%d%d",&a,&b,&c);        printf ("%d%d%d", A,b,c);            }

The logical operators of the C language include:&& (with, both of which are true binocular operators) | | (or, either side is true)! (for non-)

C-Language relational operators:, <, >=, <=.

In the output such as the following

int Main (void) {    int  A;     float b;    scanf ("%d%d%d",&a,&b,&c);    printf ("%d%3.2f", A, b);}

Where 3.2 is expressed as M.N where m means the entire floating-point type is three bits, n means that there are only two digits after the decimal point, if M<n then this number does not make any changes.
Number operator: +-* \

Relational operators:< > <= >=

Logical operator:&& | | !

Assignment operator: =

The above four precedence is the highest number operator and the assignment operator is the lowest.

1 int Main (void) {23     int  A; 4     float b; 5 6     scanf ("%d%d%d",&a,&b,&c); 7 8     printf ("%d%3.2d", A, b);

In this case, scanf means that the,& from the keyboard input is the address character.

Conditional statements

If condition statement: You can only control the first semicolon below, and if you have more than one semicolon, you need to add braces.

C Language One day