Use of scanf (Xcode development environment)

scanf Use details

• Enter a data

int num1;

scanf ("%i", &num1);

• Enter multiple data

int num1,num2;

printf ("Please enter 2 numbers:");

scanf ("%i%i", &num1,&num2);

Description

A input data type (%i%i) If there is no spacer, the default is to use table, carriage return, space to do the spacer

B can be clearly between%i%i with what symbol to make the spacer, such as%i,%i is to do with a comma input spacer, at this time in the use of table, carriage return, space is not working.

• Pay special attention to the input char type data

int num1,num2;

char c;

printf ("Please enter 1 digits, 1 letters, 1 digits:");

scanf ("%i%c%i", &num1,&c,&num2);

At this point, if the table, carriage return, space to do the spacer, the data output is wrong. You can now direct the number + character + number (for example: 2#3), without any spacer, or use the specified spacer (2,#,3 at this time the comma is the spacer).

Use of scanf (Xcode development environment)