Add 步骤四.c

步骤四.c

@@ -0,0 +1,61 @@
+#include <stdio.h>
+
+struct student {
+        int xuehao;
+        int banji;
+        float gs;
+        float dy;
+        float dw;
+        float zcj;
+        char a[10];
+};
+
+int main() {
+        struct student b[4] = {10001, 11, 99.5, 88.5, 89.5, 0, " ",
+                10002, 12, 77.9, 56.5, 87.5, 0, " ",
+                10003, 11, 92.5, 99.0, 60.5, 0, " ",
+                0, 0, 0, 0, 0, 0, "inserted",
+        };
+
+        scanf("%d", &b[3].xuehao);
+        scanf("%d", &b[3].banji);
+        scanf("%f", &b[3].gs);
+        scanf("%f", &b[3].dy);
+        scanf("%f", &b[3].dw);
+        if (b[3].xuehao == b[0].xuehao)
+                printf("%d %d %.1f %.1f %.1f ", b[0].xuehao, b[0].banji, b[0].gs, b[0].dy, b[0].dw);
+        else if (b[3].xuehao == b[1].xuehao)
+                printf("%d %d %.1f %.1f %.1f ", b[1].xuehao, b[1].banji, b[1].gs, b[1].dy, b[1].dw);
+        else if (b[3].xuehao == b[2].xuehao)
+                printf("%d %d %.1f %.1f %.1f ", b[2].xuehao, b[2].banji, b[2].gs, b[2].dy, b[2].dw);
+        else {
+                for (int i = 0; i < 4; i++) {          //计算总成绩
+                        b[i].zcj = b[i].gs + b[i].dy + b[i].dw;
+                }
+                for (int i = 0; i < 3; i++) {          //按总成绩排
+序
+                        for (int j = i + 1; j < 4; j++) {
+                                struct student temp;
+                                if (b[i].zcj < b[j].zcj) {
+                                        temp = b[i];
+                                        b[i] = b[j];
+                                        b[j] = temp;
+                                }
+                        }
+                }
+int k = 1;
+                for (int i = 1; k <= 4; i++) {
+                        for (int j = 0; j < 4; j++) {
+                                if (b[j].banji == i) {
+                                        printf("%d %d %.1f %.1f %.1f ", b[j].xuehao, b[j].banji, b[j].gs, b[j].dy, b[j].dw);
+                                        printf("%s", b[j].a);
+                                        printf("\n");
+                                        k++;
+                                }
+                        }
+                }
+        }
+
+
+        return 0;
+}