need tips in creating my program

[h0d3]

Hi everyone!!!! Im a beginner in c++!!! I want to make a program that displays a 3 number combinations from the inputted numbers....

Example: 3 4 5 3 4 1
displays

345
334
445
354
453
133
144......anything that make 3 number comb.


I need your tips in programing..... I want to learn this course.... Thank you in advance!!!!!