C Mistakes – scanf
Common Mistakes : Scanf Errors
1 : Don’t forget to write “&” before variable name
#include<stdio.h> void main() { int num; //Incorrect Way : scanf("%d",num); scanf("%d",&num); }
- Syntactically it won’t show any error message
- Logically It shows you “Garbage” or “Unexpected Value”.
- “&” should be written before “Variable” name .
2 : Don’t write “&” before Pointer variable
#include<stdio.h> void main() { int num; int *ptr; ptr = # //Incorrect Way : scanf("%d",&ptr;); scanf("%d",ptr); }
- Pointer variable Stores address of variable where it points .
- “&” is used to access “Address of Variable” , therefor no need to write “&” before pointer variable .
- Pointer stores the address of another variable , it accesses variable directly.