Handling pointers in C using Simulink 'S-Function' block

Among my little understanding in programming I'm writing this code in C to use it in a S-Function block on Matlab/Simulink. I've been trying to follow the same logic as other S-Function codes in C timestwo.c and wrote the following code. However, although I think 'it works' in my simulation I can't understand well how does every execution line inside if-statements works. For example, at the first "if" condition I want to compare two currents going into this S-Function Block:

In case Snubber Current - *u0_Is[i] is less than Snubber Reference - *u1_Iref[i], then a gate-signal (a 1) must be delivered to an electronic device (IGBT). Now, what's the idea of writing *IGBT++ = 1 ?. I want to know if it is correct to see *IGBT as a vector or array that points to a variable stored in memory, so if I write *IGBT = 1, it will save this 1 at that location?.

Thanks in advance.

    static void mdlOutputs(SimStruct *S, int_T tid)
    {
        int_T             i;
        // Snubber Current
        InputRealPtrsType u0_Is = ssGetInputPortRealSignalPtrs(S, 0);
        // Triangle Reference
        InputRealPtrsType u1_Iref = ssGetInputPortRealSignalPtrs(S, 1);
        //  Voltage THY - colector/emisor
        InputRealPtrsType u2_Vce = ssGetInputPortRealSignalPtrs(S, 2);

        real_T            *IGBT = ssGetOutputPortRealSignal(S, 0);
        real_T            *THY =  ssGetOutputPortRealSignal(S, 1);
        int_T             width = ssGetOutputPortWidth(S, 0);
        int_T             width1 = ssGetOutputPortWidth(S, 1);

    for (i=0; i<width; i++){

            if (*u0_Is[i] < *u1_Iref[i]){
                *IGBT++ = 1;
                if (*u2_Vce[i] >= 0.8 && (*u0_Is[i] < *u1_Iref[i]) ){
                    *THY++ = 1;
                }
                else {
                    *THY++ = 0;
                }
            }
            else {
                *IGBT++ = 0;
                *THY++ = 0;

            }
        }
    }