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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