int iStevec1, iStevec2;

    for(iStevec1 = 1; iStevec1 <= 5; iStevec1++)
    {
                for(iStevec2 = 1; iStevec2 <= iStevec1; iStevec2++)
                {
                            printf("*");
                            }
                printf("\n");
                }
___________________________________________________________
*
**
***
****
*****