How to use scanf in C

[leox123]

A lot of new C programmers have trouble with scanf(). So I'm going to show you how to implement scanf in C in this tutorial.

The main reason beginners have trouble is scanf works like a pointer so you have to point to what you are getting input for

#include<stdio.h>

int main()
{
   int myvariable;

   printf("Enter a number:");
   scanf("%d",&myvariable);
   printf("%d",myvariable);

   return 0;
}

See, when we used scanf we first declared what the variables type was
"%d" for int ,"%f" for float ,"%e" for a scientific notation (1e10) ,"%c" for char , "%s" for strings.

Then in the second part we have to use & just like in a pointer to point to the variable instead of just getting its value.
Remember without & your program will likely crash.

For handling strings with whitespace (sentences) and in files use fgets. Here is one of our tutorials on using it:
Reading And Writing Files In C.

You can bookmark or print the manual page on scanf for later reference: Scanf() - C reference

[chikkiarora]

Nice post. Thanks for sharing.

Scanf Function is basically used to get the input value from the user.

[madhuriarora]

Scan f() mainly used in c to input value by the user.Print f() used to print the value of enter by the user.