Lesson 21: C Programming - How to display memory address of integer variable.

Published: 26 March 2023
on channel: Software Nuggets

The int main() line is the function signature for the main() function in C. It is the entry point of any C program, and it returns an integer value. In this case, there are no arguments passed to the function.

int a = 10;

declares a variable a of type int and initializes it to the value of 10. In other words, it reserves a space in the memory to store an integer value and sets that value to 10.

printf is a function that prints output to the console.

The line printf("9: a = %d\n", a);

prints a message to the console that includes the value of variable a. Specifically, it prints the message "9: a = " followed by the value of a, which is 10 in this case.

The %d in the message tells printf that the value of a should be printed as a decimal number.

So, when you run this program, it should output the message "9: a = 10" to the console.

I hope this explanation is helpful! Let me know if you have any further questions.

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