what is the purpose of int3 in the program
INT (x86 instruction) The INT 3 instruction is defined for use by debuggers to temporarily replace an instruction in a running program in order to set a breakpoint. Other INT instructions are encoded using two bytes. This makes them unsuitable for use in patching instructions (which can be one byte long); see SIGTRAP.
BMW X3 The BMW X3 is a compact luxury crossover SUV manufactured by German automaker BMW since 2003. Based on the BMW 3 Series platform, and now in its third generation, BMW markets the crossover as a Sports Activity Vehicle, the company's proprietary descriptor for its X-line of vehicles. The first generation X3 was designed by BMW in conjunction with Magna Steyr of Graz, Austriaâ€”who also manufactured all X3s under contract to BMW. BMW manufactures the second generation X3 at their Spartanburg plant in South Carolina, United States.