done

0410/10.c

@@ -0,0 +1,18 @@
+#include <stdio.h>
+
+void fun(int a, int b, int *sum, int *diff, int *product, float *divide) {
+    *sum = a + b;
+    *diff = a - b;
+    *product = a * b;
+    *divide = (float)a / b;
+}
+
+int main() {
+    int a, b;
+    int sum, diff, product;
+    float divide;
+    scanf("%d %d", &a, &b);
+    fun(a, b, &sum, &diff, &product, &divide);
+    printf("%d %d %d %.2f\n", sum, diff, product, divide);
+    return 0;
+}

0410/11.c

@@ -0,0 +1,31 @@
+#include <stdio.h>
+#define for_i(i, range, inner)                                                 \
+    {                                                                          \
+        int i;                                                                 \
+        for (i = 0; i < range; i++)                                            \
+            inner;                                                             \
+    }
+
+int search(int x[], int n, int *count) {
+    int cnt = 0, max_num = -1;
+    for_i(i, n, {
+        if (x[i] > max_num) {
+            max_num = x[i];
+            cnt = 1;
+        } else if (x[i] == max_num) {
+            cnt++;
+        }
+    });
+    *count = cnt;
+    return max_num;
+}
+
+int main() {
+    int n, count, max_num;
+    int x[1005];
+    scanf("%d", &n);
+    for_i(i, n, scanf("%d", &x[i]));
+    max_num = search(x, n, &count);
+    printf("%d %d\n", max_num, count);
+    return 0;
+}

0410/9.c

@@ -0,0 +1,23 @@
+#include <stdio.h>
+#define for_i(i, range, inner)                                                 \
+    {                                                                          \
+        int i;                                                                 \
+        for (i = 0; i < range; i++)                                            \
+            inner;                                                             \
+    }
+
+int main() {
+    int m, n, max_m, max_n, max_num = -1, *p;
+    scanf("%d %d", &m, &n);
+    for_i(i, m, for_i(j, n, {
+              int num;
+              scanf("%d", &num);
+              if (num > max_num) {
+                  max_num = num;
+                  max_m = i;
+                  max_n = j;
+              }
+          }));
+    printf("%d %d %d\n", max_num, max_m + 1, max_n + 1);
+    return 0;
+}