you may also try to use an array.

Code:
void main(){
	video_screen = 0;
	
	var vx[10];
	int i = 0;
	int j = 0;

	while(i<10){
		vx[i] = integer(random(192)+1);//create random number
		//check if that number generated before
		j = 0;
		while(j<10){
			//loop thru all numbers
			if(i!=j)if(vx[i]==vx[j]) break; 
			j++;
		}
		if(j==10) i++;//if j is 10 at this point it means loop is not broken, therefore same number not encountered, start generating nex number
	}	
	

	//print all numbers
	i = 0;
	while(i<10){
		printf("%d \n",vx[i]);
		i++;
	}
	
}




3333333333