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scanf in loop crashes IDE


New Coder
Hello World!

I keep getting crashed my IDE when I enter a letter in the scanf instead of a number. I tried to use scanf's return value to check that it succesfully matches the input but it still crashes when I enter a letter.

Thank you in advance for any help.

int getMove(Board_t *self, unsigned int *x, unsigned int *y) {

    //Reads values from keyboard and returns them in x and y.

    int inputsMatched = 0;

    if (!errorsInBoard(self)) {
        do {
            printf("Select a cell [row].[column]: ");
            inputsMatched = scanf("%u.%u", x, y);
        while (inputsMatched != 2 || *x >= self->dim1 || *y >= self->dim2);
        return 0;
    else {
        return -1;

Sure, the IDE gets in a strop when receiving invalid input. Not sure why. Try using a generic string input function like gets() and then use sscanf() to parse the string. This works better for me at least.

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