See the command.
:[range]s[ubstitute]/{pattern}/{string}/[flags]
You just need to add c in the [flags] part,then every time when you want to execute the replacement,you will get the info like this in the command part:
y/n/a/q/l/^E/^Y
| Trigger | Effect |
|---|---|
| y | Substitute this match |
| n | Skip this match |
| q | Quit substituting |
| l | "last"—Substitute this match, then quit |
| a | "all"-Substitute this and any remaining matches |
| Scroll the screen up | |
| Scroll the screen down |