题解 | #KiKi算期末成绩#

int main(){
    int grade[4] = {0};
    int i = 0;
   float finalgrade = 0;
    for (i = 0;i < 4;i++)
        scanf("%d ",&grade[i]);//输入成绩并存储在数组中
    finalgrade = grade[0]*0.2f + grade[1]*0.1f + grade[2]*0.2f + grade[3]*0.5f;
    printf("%.1f",finalgrade);
    return 0;
}