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C Programming - Scanner Function

Jul 27, 2024

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C Programming - Scanner Function

Introduction

Presenter's name: आनंद
Topic: Scanner Function in C

Definition of Scanner Function

C programming provides a function called scanf.
Usage: Used to read data from the user.
Holds the output screen until the user enters a value.
Found in: stdio.h header file.
- Meaning of stdio: Standard Input and Output.

Importance of stdio.h Header File

Necessary for handling user input and output in C.
Associated with features like printing messages for user inputs.

Conversion Specification

Important when using scanf and printf functions.
Examples:
- %d for integer values.
- %f for float values.
- %s for string values.

Example Code

Example 1: Reading an Integer

int a;
printf("Enter a number:");
sscanf("%d", &a);
printf("Value of a = %d", a);

Garbage Value: Printed if variable is uninitialized.

Example 2: Reading Two Integers

int a, b;
printf("Enter two numbers:");
scanf("%d %d", &a, &b);
printf("Value of a = %d, Value of b = %d", a, b);

Input example: If user enters 5 and 6.

Example 3: Reading an Integer and a Float

int a;
float b;
printf("Enter one integer and one decimal number:");
scanf("%d %f", &a, &b);
printf("Value of a = %d, Value of b = %f", a, b);

Input example: If user enters 50 and 6.5.

Conclusion

Further videos will cover more C programming basics.
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