The insert() Function

◀ The substr() Function▶ The assign() Function Amazon The insert() functions allow you to insert a character, a character array, a string, or multiple characters into a string, given the starting position. Here are the prototypes of the most commonly used insert() functions:


The first function inserts s in the invoking object at index pos. The second one inserts cs in the invoking object at index pos. The third one inserts the first n characters in cs in the invoking object at index pos. The fourth one inserts n’s c in the invoking object at index pos. Here are several examples:

string a = "Petrina ";
string b = "dogs";
char *c = "loves cats";
char d = '.';
a.insert(8, b);  /* a is "Petrina dogs" */
a.insert(8, c, 6);  /* a is "Petrina loves dogs" */
a.insert(7, 3, d);  /* a is "Petrina... loves dogs" */

Inserting a string in another string may not be common but it’s still good to know.
Next let’s look at assign() function!
◀ The substr() Function▶ The assign() Function