Three questions for C language interviews and three questions for C language interviews

Three questions for C language interviews and three questions for C language interviews

1. There are one hundred integers, with a negative number. Find the part with the largest sum of the three consecutive numbers.

Example:

Input: 2,-8, 3,-2, 4,-10

Output: 5 ({3,-2, 4 })

#include
 
   int find(int arr[], int len); int main(void) {    int a[100], b[98], i = 0;    for(i=0; i<100; i++)        scanf("%d", &a[i]);    for(i=0; i<98; i++)    {        b[i] = a[i] + a[i+1] + a[i+2];    }    i = find(b, 98);    printf("%d({%d, %d, %d})\n", b[i], a[i], a[i+1], a[i+2]);} int find(int arr[], int len){    int i = 0, j = 0, tem = 0;    for(i=0; i
  
    arr[i+1] && arr[i] > arr[j])            j = i;    }    i++;    if (arr[i] > arr[j])         j = i;    return j;}
  
 

2. Use <<>>,|,& to implement an unsigned short variable (two bytes) to exchange the high and low bits !!

Example: 0x1234 after switching 0x3412

Function prototype: void func (unsigned short *)

#include
 
   void func(unsigned  short *a);int main(void) {    unsigned  short a = 0x11ff;    func(&a);    printf ("%x\n", a);} void func(unsigned  short *a){    unsigned  short b = *a;    *a = *a << 8;    b = b >> 8;    *a += b;} 
 

3. embedded systems often require programmers to access a specific memory location. In a project, the value of an integer variable with an absolute address of 0x67a9 must be set to 0xaa55.

The compiler is a pure ANSI compiler. Write code to complete this task.