#include <stdint.h>
#include <stdio.h>

uint8_t u8Minuend;
int8_t i8Subtrahend;

void main(void)
{
	int8_t i8Result = 150;
	u8Minuend = 250;
	i8Subtrahend = 100;

	i8Result = (u8Minuend > i8Subtrahend) ? (int8_t)(u8Minuend - i8Subtrahend) : i8Result;

	printf("The operation result is %d. \r \n", i8Result);
}