学生成绩管理系统

.vscode/settings.json

@@ -0,0 +1,5 @@
+{
+    "files.associations": {
+        "创建学生基本信息": "c"
+    }
+}

学生成绩管理系统

@@ -0,0 +1,86 @@
+#include  <stdio.h>
+#include  <stdlib.h>
+#include  <string.h>
+#define   MAX_LEN  10                    	// 字符串最大长度 
+#define   STU_NUM 30                       // 最多的学生人数 
+#define   COURSE_NUM 6                     // 最多的考试科目数 
+typedef struct student
+{
+		long num;						// 每个学生的学号 
+		char name[MAX_LEN];            	// 每个学生的姓名 
+		float score[COURSE_NUM];		// 每个学生COURSE_NUM门功课的成绩 
+		float sum;                   	     // 每个学生的总成绩 
+		float aver;               	     // 每个学生的平均成绩 
+}STU;
+int   Menu(void);
+void  ReadScore(STU stu[], int n, int m);
+void  AverSumofEveryStudent(STU stu[], int n, int m);
+void  AverSumofEveryCourse(STU stu[], int n, int m);
+void  SortbyScore(STU stu[],int n,int m,int (*compare)(float a,float b));
+int   Ascending(float a, float b);
+int   Descending(float a, float b);
+void  SwapFloat(float *x, float *y);
+void  SwapLong(long *x, long *y);
+void  SwapChar(char x[], char y[]);
+void  AsSortbyNum(STU stu[], int n, int m);
+void  SortbyName(STU stu[], int n, int m);
+void  SearchbyNum(STU stu[], int n, int m);
+void  SearchbyName(STU stu[], int n, int m);
+void  StatisticAnalysis(STU stu[], int n, int m);
+void  PrintScore(STU stu[], int n, int m);
+void  WritetoFile(STU record[], int n, int m);
+void  ReadfromFile(STU record[], int *n, int *m);
+int main(void)
+{
+	char  ch;
+	int   n = 0, m = 0;
+	STU   stu[STU_NUM];	
+printf("Input student number(n<%d):", STU_NUM);
+	scanf("%d", &n);
+printf("Input course number(m<=%d):",COURSE_NUM);
+	scanf("%d", &m);
+	while (1)
+	{
+		ch = Menu();					    // 显示菜单，并读取用户输入 		
+		switch (ch)
+		{
+			case 1:ReadScore(stu, n, m);
+					break;
+			case 2: AverSumofEveryCourse(stu, n, m);                        
+					break;
+            case 3: AverSumofEveryStudent(stu, n, m);                    
+					break;
+			case 4: SortbyScore(stu, n, m, Descending);
+					printf("\nSort in descending order by score:\n");
+					PrintScore(stu, n, m);
+					break;
+			case 5: SortbyScore(stu, n, m, Ascending);
+					printf("\nSort in ascending order by score:\n");
+					PrintScore(stu, n, m);
+					break;
+			case 6: AsSortbyNum(stu, n, m);
+					printf("\nSort in ascending order by number:\n");
+					PrintScore(stu, n, m);
+					break;
+			case 7: SortbyName(stu, n, m);
+					printf("\nSort in dictionary order by name:\n");
+					PrintScore(stu, n, m);
+					break;
+			case 8: SearchbyNum(stu, n, m);
+					break;
+			case 9: SearchbyName(stu, n, m);
+					break;
+			case 10: StatisticAnalysis(stu, n, m);
+					break;
+			case 11:PrintScore(stu, n, m);
+					break;
+case 12:WritetoFile(stu, n, m);
+				     break;
+			case 13:ReadfromFile(stu, &n, &m);
+				     break;
+			case 0: printf("End of program!");
+			       	exit(0);
+			default:printf("Input error!");
+		}
+	}
+	return 0;}