3.1.1;例3-1

#include<stdio.h>
int main(void)
{
    int mynumber=38;
    int yournumber;

    printf("Input your number:");
    scanf("%d",&yournumber);
    if(yournumber=mynumber)
        printf("OK!you are right!\n");
    else
       if(yournumber>mynumber)
           printf("Sorry!your number is bigger than mynumber!\n");
       else
           printf("Sorry!your number is smaller than mynumber!\n");

       return 0;

}