struct

0417/1.c

@@ -0,0 +1,29 @@
+#include <stdio.h>
+#define INT32_MIN (-2147483647 - 1)
+#define for_i(i, range, inner)                                                 \
+    {                                                                          \
+        int i;                                                                 \
+        for (i = 0; i < range; i++)                                            \
+            inner;                                                             \
+    }
+
+typedef struct {
+    int x;
+    int y;
+    int z;
+} Point3D;
+
+int main() {
+    Point3D max = {INT32_MIN, INT32_MIN, INT32_MIN};
+    Point3D input;
+    int n = 0;
+    scanf("%d", &n);
+    for_i(i, n, {
+        scanf("%d %d %d", &input.x, &input.y, &input.z);
+        if (input.z > max.z) {
+            max = input;
+        }
+    });
+    printf("%d %d %d\n", max.x, max.y, max.z);
+    return 0;
+}

0417/2.c

@@ -0,0 +1,19 @@
+#include <string.h>
+#include <stdio.h>
+
+typedef struct {
+    char areaCode[10];
+    char exchangeCode[40];
+} PhoneNumber;
+
+int main() {
+    PhoneNumber a, b;
+    scanf("%s %s", a.areaCode, a.exchangeCode);
+    scanf("%s %s", b.areaCode, b.exchangeCode);
+    if (strcmp(a.areaCode, b.areaCode) == 0) {
+        printf("%s", b.exchangeCode);
+    } else {
+        printf("%s%s", b.areaCode, b.exchangeCode);
+    }
+    return 0;
+}

0417/3.c

@@ -0,0 +1,70 @@
+#include <stdio.h>
+
+#define for_i(i, range, inner)                                                 \
+    {                                                                          \
+        int i;                                                                 \
+        for (i = 0; i < range; i++)                                            \
+            inner;                                                             \
+    }
+
+typedef struct {
+    int year;
+    int month;
+    int day;
+} Date;
+
+int is_leap_year(int year) {
+    if (year % 4 == 0 && year % 100 != 0 || year % 400 == 0) {
+        return 1;
+    } else {
+        return 0;
+    }
+}
+
+int get_day_of_month(int year, int month) {
+    switch (month) {
+    case 1:
+    case 3:
+    case 5:
+    case 7:
+    case 8:
+    case 10:
+    case 12:
+        return 31;
+    case 4:
+    case 6:
+    case 9:
+    case 11:
+        return 30;
+    case 2:
+        return is_leap_year(year) ? 29 : 28;
+    default:
+        return -1;
+    }
+}
+
+int main() {
+    Date date1, date2;
+    int diff = 0;
+    scanf("%d %d %d", &date1.year, &date1.month, &date1.day);
+    scanf("%d %d %d", &date2.year, &date2.month, &date2.day);
+
+    for_i(i, date1.month - 1, { diff += get_day_of_month(date1.year, i + 1); })
+        diff += date1.day - 1;
+    for_i(i, date2.month - 1, { diff -= get_day_of_month(date2.year, i + 1); })
+        diff -= date2.day - 1;
+    {
+        int year_max = date1.year > date2.year ? date1.year : date2.year;
+        int year_min = date1.year < date2.year ? date1.year : date2.year;
+        int sign = date1.year > date2.year ? 1 : -1;
+        int i;
+        for (i = year_min; i < year_max; i++) {
+            diff += sign * (is_leap_year(i) ? 366 : 365);
+        }
+    }
+    if (diff < 0) {
+        diff = -diff;
+    }
+    printf("%d\n", diff);
+    return 0;
+}