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题目：利用条件运算符的嵌套来完成此题：学习成绩>=90分的同学用A表示，60-89分之间的用B表示，60分以下的用C表示

#include “stdio.h”

main()

{


int score;

char grade;

printf(“please input a score\n”);

scanf_s(“%d”,&score,8);

grade = score >= 90 ? ‘A’: score>= 60 ? ‘B’:’C’;

printf(“%d belongs to %c”,score,grade);

}

上面的语句中使用scanf时出现下述问题：

warning C4996: ‘scanf’: This function or variable may be unsafe. Consider using scanf_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

1>        D:\Program Files\Microsoft Visual Studio 9.0\VC\include\stdio.h(306) : 参见“scanf”的声明