init

we/23-3.c

@@ -0,0 +1,86 @@
+#include <stdlib.h>
+#include <stdio.h>
+
+struct student{
+    int stuId;
+    char *name;
+    int score;
+};
+
+void inputData(struct student *s, int size){
+    for(int i = 0; i < size; i++){
+        printf("请输入第%d个学生的学号、姓名、成绩：", (i + 1));
+        printf("学生学号：");
+        scanf("%d", &s[i].stuId);
+        s[i].name = (char *)malloc(50 * sizeof(char));
+        if (s[i].name == NULL)
+        {
+            printf("内存分配失败\n");
+        }
+        
+        printf("学生姓名：");
+        scanf("%s", s[i].name);
+        printf("学生成绩：");
+        scanf("%d", &s[i].score);
+    }
+}
+
+void bubbleSort(struct student *s, int size){
+    for(int i = 0;i<size;i++){
+        for(int j = 0;j<size-i-1;j++){
+            if(s[j].score > s[j+1].score){
+                struct student temp = s[j];
+                s[j] = s[j+1];
+                s[j+1] = temp;
+            }
+        }
+    }
+}
+
+struct student *findScore(struct student *s, int size, int score){
+    int left = 0;
+    int right = size - 1;
+    int mid;
+    while(left <= right){
+        mid = left + (right - left) / 2;
+        if(s[mid].score == score){
+            return &s[mid];
+        }else if (s[mid].score > score){
+            right = mid - 1;
+        }else
+        {
+            left = mid + 1;
+        }
+    }
+    return NULL;
+}
+
+int main(){
+    int size;
+    printf("请输入学生人数：");
+    scanf("%d",&size);
+    struct student *s = (struct student *)malloc(sizeof(struct student)*size);
+    inputData(s, size);
+    bubbleSort(s, size);
+    for(int i = 0;i<size;i++){
+        printf("学号：%d，姓名：%s，成绩：%d\n", s[i].stuId, s[i].name, s[i].score);
+    }
+    printf("请输入要查找学生的成绩：");
+    int score;
+    scanf("%d",&score);
+    struct student *p = findScore(s, size, score);
+    if(p == NULL){
+        printf("未找到此成绩的学生\n");
+    }else{
+        printf("学号：%d，姓名：%s，成绩：%d\n",p->stuId,p->name,p->score);
+    }
+
+    for (int i = 0; i < size; i++)
+    {
+        free[s[i].name];
+    }
+
+    free(s);
+    
+    return 0;
+}