first commit

main.c

@@ -0,0 +1,125 @@
+#include <stdio.h>
+
+struct Student 
+{
+	char cSchool[15];
+    char cGrade[15];
+	char cName[15];		
+};
+
+int test();						
+int checknum(int a,int b);
+int checkresult(int x);      /*函数说明*/    
+
+int a=-1,b,c,x;
+int k=0,grade;           /*定义所需要的参数*/
+
+int main()
+{
+   	struct Student student1;
+	printf("****预祝测试顺利****\n\n");
+	printf("学校:");
+	scanf("%s",&student1.cSchool);
+	printf("年级:");
+	scanf("%s",&student1.cGrade);
+	printf("姓名:");
+	scanf("%s",&student1.cName);
+    printf("\n");
+	 
+    printf("请回答下面十道题目\n");
+	
+	do{
+		int i=test();
+		if(i==-1)
+		{
+			if(grade>=90)
+				printf("-------SMART");
+			else if(grade>=80&&grade<90)
+				printf("-------GOOD");
+			else if(grade>=70&&grade<80)
+				printf("-------OK");
+			else if(grade>=60&&grade<70)
+			    printf("-------PASS");
+			else
+				printf("-------TRY AGAIN");	
+			break;
+		}
+		else if(checkresult(i)==0){
+			a=-1;
+		}
+	}while(k);
+	return 0;
+}
+
+int test()
+{
+	srand((unsigned int)time(NULL));
+	while(checknum(a,b)==0)			/*若返回0，则重新取值；若返回1，则完成a,b取值*/ 
+	{
+		a=rand()%51;            	/*a取值范围0~50*/
+		b=rand()%51;              	/*b取值范围0~50*/
+		c=rand()%2;	            	/*c取值范围0~1*/
+	}
+	k++;                            /*k表示第几题*/
+	if(k==11)
+	{
+		printf("\n所有题目已答完，你的成绩：%d分",grade); 
+		return -1;
+		}
+	else if(c==0)
+	{
+		printf("第%d题:%d+%d=",k,a,b);
+		return a+b; 
+		}
+	else if(c==1)
+	{
+		printf("第%d题:%d-%d=",k,a,b);
+		return a-b;
+		}
+	return -1;	
+}
+
+int checknum(int a,int b)			/*检查相加或相减的两个数是否满足要求*/
+{
+	if(a>50||b>50||a<0||b<0||(a+b)>50||(a-b)<0)
+		return 0;
+	else
+		return 1;
+ } 
+ 
+ int checkresult(int result)
+ {
+    int i;
+    for(i=1;i<4;i++)
+	{
+        scanf("%d", &x);
+        if (x!=result)
+		{
+            if (i==3)
+			{
+                if (c==0){
+                    printf("三次回答错误，正确答案是%d\n",a+b);
+                }
+                else {
+                    printf("三次回答错误，正确答案是%d\n",a-b);
+                }
+                return 0;
+            }
+            printf("回答错误,请再次输入：");
+        }
+		else{
+			switch(i){
+						case 1:grade+=10;
+								break;
+						case 2:grade+=7;
+								break;
+						case 3:grade+=5;
+								break;
+						default:grade+=0;
+								break;
+				     }
+		    		 return 0;    		     
+			}
+	}
+	return 0;
+ }