View Code of Problem 69

#include <stdio.h>
int fun(int x){
	if(x<1)
		return x;
	else if(x>=1&&x<10)
		return 2*x-1;
	else
		return 3*x-11;
}
int main(){
	int x,y;
	scanf("%d",&x);
	y=fun(x);
	printf("%d",y);
	return 0;
}