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
Code:
#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