Printf
The printf statement allows you to send output to standard out(Computer Screen).
Here is another program that will help you learn more about printf:
#include <stdio.h>
int main()
{
int d, e, f;
d = 5;
e = 7;
f = d + e;
printf("%d + %d = %d\n", d,e,f);
getchar();
return 0;
}
Here save the file as Second.c. Compile and Run the program.
Explanation:
The line int d, e, f; declares three integer variables named d, e and f. Integer variables hold whole numbers.
The next line initializes the variable named d to the value 5.
The next line sets e to 7.
The next line adds d and e and "assigns" the result to f.
The computer adds the value in d (5) to the value in e (7) to form the result 12, and then places that new value (12) into the variable f. The variable f is assigned the value 12. For this reason, the = in this line is called "the assignment operator."
The printf statement then prints the line "5 + 7 = 12." The %d placeholders in the printf statement act as placeholders for values. There are three %d placeholders, and at the end of the printf line there are the three variable names: d, e and f. C matches up the first %d with d and substitutes 5 there. It matches the second %d with e and substitutes 7. It matches the third %d with f and substitutes 12. Then it prints the completed line to the screen: 5 + 7 = 12. The +, the = and the spacing are a part of the format line and get embedded automatically between the %d operators as specified by the programmer.
Microcontroller
What is a Microcontroller?
Microcontroller Specification
Programming PIC16F877A
Playing with a C Programming and PIC16F877A
Creating a Digital Clock using PIC16F877A, LCD and DS1337 Clock IC from Dallas
How to Load Hex File into PIC16F877A
Articles :
Lightning Surge Testing
Bit Error Rate Testing
Insertion Loss Testing
Light Emitting Diode
DC Power Jack
Voltage Regulator and Diode
Transistor and Operational Amplifier
Trimmer Pot, Relay and PCB
Understanding PIC16F877A
Product Development Using PIC16F877A
More Product Development Using PIC16F877A
PIC16F877A Input Output Overview
Interfacing PIC16F877A With LCD
VoIP Basic
VoIP Phone
Using VoIP Through Normal PSTN Telephone
What is Codec?
C Programming Tutorial
Introduction
What is C programming language?
The First C Program
The First C Program - Explanation
Variables
Printf
Reading User Values
Scanf
Looping
Using FOR loop
Arrays
More on Arrays
Example Program that use Arrays to Compare 6 PIN number
If, Else If, Else
Functions
Pointers
Summary