Read values in C- scanf() function

Read values in C- scanf() function in C

scanf() function() is used to read different types of values in C.

Syntax: scanf(“Control-string”, &arg1,&arg2,&arg3,……);

Control-string is the format to enter data. It has % sign followed by format specifier indicating the type of variable whose value is to be input .

&arg1,&arg2,&arg3,… refer to variables whose values is to be entered by user.



1. Input int data

Format Specifier: %wd 

% is the conversion character.
w is an integer value which specifies the width of numeric value to be read.
d is the data type specifier which specifies that an int type variable is to be read.    

 

/*Program to input int data*/
#include<stdio.h>
int main()
{
int n1;
printf("Enter int value=");
scanf("%d",&n1);
printf("\n Value=%d",n1);
return(0);
}

Output

Enter int value=20
Value=20 

2. Input short data
Format Specifier: %whd          

% is the conversion character.
w
is an integer value which specifies the width of numeric value to be read.
hd
is the data type specifier which specifies that a short type variable is to be read.

Program to input short data
#include<stdio.h>
int main()
{
short m;
printf("Enter short value=");
scanf("%hd",&m);
printf("\nValue=%hd",m);
return(0);
}
Output
Enter short value=25
Value=25



3. Input long data

Format Specifier: %wld            

% is the conversion character.
w
is an integer value which specifies the width of numeric value to be read.
ld
is the data type specifier which specifies that a short type variable is to be read. 

Program to input long data
#include<stdio.h>
int main()
{
long k;
printf("Enter long value=");
scanf("%ld",&k);
printf("\nValue=%ld",k);
return(0);
}
Output
Enter a long value=1560
Value=1560



  
4. Input float data

Format Specifier: %f          

% is the conversion character
f is the data type specifier which specifies that a float type variable is to be read. There is no need to specify any field width.

Program to input float data
#include<stdio.h>
int main()
{
float no;
printf("Enter float value =");
scanf("%f",&no);
printf("\nValue=%f",no);
return(0);
}
Output
Enter float value=2.55
Value=2.55 

5. Input double/long double type data

Format Specifier: %lf

% is the conversion character
lf is the data type specifier which specifies that a double or long double type variable is to be read. There is no need to specify any field width.

 

Program to input double/long double type data
#include<stdio.h>
int main()
{
long double n1;
printf("Enter long double value=");
scanf("%lf",&n1);
printf("Value=%lf",n1);
return(0);
}
Output
 



6. Input char data

Format Specifier: %c           

% is the conversion character
c is the data type specifier which specifies that a char type variable is to be read.

Program to input char type data
#include<stdio.h>
int main()
{
char choice;
printf("\nEnter your choice(Y/N)");
scanf("%c",&choice);
printf("\nchoice=%c",choice);
return(0);
}
Output
Enter your choice(Y/N)Y
choice=Y



7. Input string data

Format Specifier: %ws             

% is the conversion character
w is an integer value which specifies the number of characters which can be stored in string variable.
s is the data type specifier which specifies that a string type variable is to be read. we don’t need to use ampersand sign(&) before the string variable that we want to read   

Program to input string data
#include<stdio.h>
int main()
{
char sname[20]; 
printf("\nEnter name=");
scanf("%s",sname);
printf("\nsname=%s",sname);
return(0);
}
Output
Enter name=Aman
sname=Aman

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Lesson tags: formatted input function in c, formatted input in c, get input in c, input values in c, input values using scanf, read values in c, read variables in c, scanf function, scanf() function in C
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