first commited

97.c

@@ -0,0 +1,28 @@
+#include<stdio.h>
+int main()
+{
+	int a;
+	while(scanf("%d",&a)!=EOF){
+	if(a>=90&&a<=100)
+	{
+		printf("A\n");
+	}else if(a>=80&&a<=89)
+	{
+		printf("B\n");
+	}
+	else if(a>=70&&a<=79)
+	{
+		printf("C\n");
+	}else if(a>=60&&a<=69)
+	{
+	printf("D\n");	
+	}else if(a>=0&&a<=59)
+	{
+	printf("E\n");
+	}else
+	{
+		printf("Score is error!\n");
+	}
+	}
+	return 0;
+	}