【试卷】大连理工大学C程期末模拟考 - 上

void fun(int a[], int n, int *pMax, int *pMin) {
  pMax = pMin = a;
  for (int i = 1; i < n; i++) {
    if (a[i] > *pMax)
      pMax = &a[i];
    if (a[i] < *pMin)
      pMin = &a[i];
  }
  printf("min = %d ,max = :%d\n", *pMax, *pMin);
  int *p = pMax;
  pMax = pMin;
  pMin = p;
  printf("min = %d ,max = :%d\n", *pMax, *pMin);
}
void main() {
  int a[] = {1, 2, 3, 0, 5, 8};
  int min = -1, max = -1;
  int *p1 = &min, *p2 = &max;
  fun(a, 6, p1, p2);
  printf("min = %d ,max = :%d\n", min, max);
}

#include <stdio.h>
int *fun() {
  static int x = 5;
  static int y = 10;
  int *p = &x;
  if (*p < y)
    p = &y;
  printf("A: %d %d\n", x, y);
  x += 2;
  y -= 3;
  return p;
}
int main() {
  int *q = fun();
  printf("B: %d\n", *q);
  q = fun();
  printf("C: %d\n", *q);
  return 0;
}

#include <stdio.h>
int main()
{
    const char* s[3] = { "abc", "xyz", "hello" };
    const char* p = s[0];
    printf("A: %c\n", *(p + 2));
    p = s[2];
    printf("B: %c\n", *p);
    printf("C: %c\n", *(s[1] + 1));
    s[1] = s[0];
    p = s[1] + 1;
    printf("D: %c\n", *p);
    return 0;
}

#include <stdio.h>
int main()
{
    int a[2][3] = { {1,2,3}, {4,5,6} };
    int (*p)[3] = a;
    printf("A: %d\n", p[1][1]);
    printf("B: %d\n", *(*(p+1) + 2)); 
    p++;
    printf("C: %d\n", (*p)[0]);
    int* q = &a[0][0];
    q += 4;
    printf("D: %d\n", *q);
    return 0;
}

#include <stdio.h>
void swap(int **x, int **y) {
  int *t = *x;
  *x = *y;
  *y = t;
}
int *fun(int *p) {
  static int a = 7;
  static int b = 20;
  if (*p > 10)
    return &b;
  else
    return &a;
}
int main() {
  int v1 = 3, v2 = 15;
  int *p1 = fun(&v1);
  int *p2 = fun(&v2);
  printf("A: %d %d\n", *p1, *p2);
  swap(&p1, &p2);
  printf("B: %d %d\n", *p1, *p2);
  return 0;
}

#include <stdio.h>
// 1.函数声明
int main() {
  int grade[10] = {90, 89, 56, 78, 76, 87, 65, 67, 92, 88}; //数组初始化
  int index; // 最大元素下标
  // 2.函数调用
  printf("max = %d\n", grade[index]);
  return 0;
}
int max_grade(int a[], int size) {
  int max = a[0], index = 0, i;
  for (i = 1; i < size; i++) {
    if (a[i] > max) {
      // 3.
      // 4.
    }
  }
  // 5.函数返回
}

#include <stdio.h>
int main() {
  char *p, s[6];
  int n;
  p = s;
  /*1*/;
  n = *p - /*2*/;
  while (/*3*/){
    n = /*4*/
  }
  printf("%d\n", n);
  return 0;
}

void fun(int a[], int n) {
  int i, j, t;
  for (j = 0; /*1.*/; j++)
    for (i = 0; /*2.*/; i++)
      if (/*3.*/) {
        t = a[i];
        a[i] = a[i + 1];
        a[i + 1] = t;
      }
}
main() {
  int i, a[10] = {3, 7, 5, 1, 2, 8, 6, 4, 10, 9};
  /*4.*/;
  for (i = 0; i < 10; i++)
    printf("%3d", a[i]);
}

#include <stdio.h>
void main() {
  char a[] = "I am a boy.", b[20];
  int i;
  for (i = 0; *(a + i) != '\0'; i++)
    *(b + i) = /*1.*/;
  *(b + i) = /*2.*/;
  printf("string  a  is ：%s\n", a);
  printf("string b is：");
  for (i = 0; b[i] != '\0'; i++)
    printf("%c", b[i]);
  printf("\n");
}