CC Comments

C Comments

Comments can be used to explain code, and to make it more readable.

It can also be used to prevent execution when testing alternative code.

Comments can be singled-lined or multi-lined.

Single-line Comments

Single-line comments start with two forward slashes (//).

Any text between // and the end of the line is ignored by the compiler (will not be executed).

Multi-line Comments

Multi-line comments start with /* and ends with */.

Any text between /* and */ will be ignored by the compiler.

#include <stdio.h>

int main() {
  // This is a comment
  printf("Hello World!");
  return 0;
}

#include <stdio.h>

int main() {
  printf("Hello World!"); // This is a comment
  return 0;
}

#include <stdio.h>

int main() {
  /* The code below will print the words Hello World!
  to the screen, and it is amazing */
  printf("Hello World!");
  return 0;
}