Comments

Comments are annotations that you write for humans (explaining what your code does or why you coded it that way). They are ignored by the compiler.

Single-line comment

Use // to insert a single-line comment:

// Single-line comment
int a = 5; // You can also put it beside here

Multi-line comment

Use /* and */ to insert a multi-line comment:

/*
 * Multi-line comment
 * (The extra '*' characters at the start of each
 * line are optional --- they just look cool)
 */
int main() {
  return 0;
}

References

• C++ Crash Course (Josh Lospinoso) — 1. Up and Running