Mine

struct opgave genereer_opgave(void){	struct opgave blok;	int getal1,getal2,oplossing;	char operand;	do{		getal1 = geef_random_getal(0,10);	}while(zit_in_getallen(getal1));		do{		getal2 = geef_random_getal(0,10);	}while(zit_in_getallen(getal2));	do{		operand = geef_random_bewerking();	}while(!heeft_gehele_oplossing(getal1,getal2,operand));		switch(operand){	case '*': oplossing = getal1*getal2;		break;	case '/': oplossing = (int) getal1/getal2;		break;	case '+': oplossing = getal1 + getal2;		break;	case '-' oplossing = getal1 - getal2;		break;	default: oplossing = -1;		break;	}	blok.getal1 = getal1;	blok.getal2 = getal2;	blok.operand = operand;	blok.oplossing = oplossing;	return blok;}