Do you want the result to be another vector with the values 11, 12, 13, the same vector with the values changed to 11, 12, 13 or just iterate over the vector and show the values with 10 added??
Add.... Yes - but not to infinity as such but to the maximum value allowed for the type used (eg unsigned int 2^32). Just use a simple for loop without a terminating condition. A for loop has 3 parts separated by ; All parts are optional.