题解 | KiKi算期末成绩

#include <stdio.h>

int main()
{
	int a = 0; 
	int b = 0; 
	int c = 0; 
	int d = 0; 
	float sum = 0.0f;
	scanf("%d %d %d %d", &a, &b, &c, &d); 
	sum = (float)((a * 0.2) + (b * 0.1) + (c * 0.2) + (d * 0.5));
	printf("%0.1f\n", sum); 

	return 0; 
}