Function
name: scanf()
The list of formatted specifiers
Example of the scanf() function
Output
Function
Header: <stdio.h>
Declaration: int
scanf (const char *format [, address,………..]);
Return
Value: On
success, the scanf() function return the number of input fields
successfully scanned, converted and stored. Return 0, if no fields were stored.
The scanf() function scans and formats input from stdin. It scans a series of input
fields (all the characters up to the next white-space character) at a time. The
format of scanf() function is scanf
(“Formatted_specifier”, &variable_name). If you don’t
use the & (Ampersand or Address
Operator), you might get
undesired result. So you should be careful to put it before the variable
name.
The list of formatted specifiers
Formatted Specifier
|
Meaning
|
%d
|
For storing integer value
|
%c
|
For storing a character
|
%s
|
For storing string
|
%f
|
For storing float and double value
|
Example of the scanf() function
#include<stdio.h>
#include<conio.h>
void main()
{
int i;
char c;
char s[10];
float f;
printf("Enter
an integer number:");
scanf("%d",&i);
fflush(stdin);
printf("Enter string:");
scanf("%s",s);
fflush(stdin);
printf("Enter
a floating number:");
scanf("%f",&f);
fflush(stdin);
printf("Enter a
character:");
scanf("%c",&c);
printf("\nYou
have entered \n\n");
printf("integer:%d
\ncharacter:%c \nstring:%s \nfloat:%f",i,c,s,f);
}
Here four formatted inputs are stored with scanf() function. There is no need to declare the address Operator
(&) for storing string value because variable name is the original address for string value. The fflush(stdin) function is also being used
to flush the buffer.
If you don't use fflush(stdin), there will be a problem in buffer and you can’t store inputs properly by scanf() function.
If you don't use fflush(stdin), there will be a problem in buffer and you can’t store inputs properly by scanf() function.
Output
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