C语言二维数组中的查找的实例

#include<stdio.h>
#include<stdlib.h>

typedef unsigned int boolean;
#define MAX 4
#define TRUE 1
#define FALSE -1

void showAry(int ary[MAX][MAX]);
boolean find(int ary[MAX][MAX], int rows, int cols, int number);

void showAry(int ary[MAX][MAX]) {
  int i = 0, j = 0;
  for(; i < MAX; i++) {
    j = 0;
    for(; j < MAX; j++) {
      printf("%d ", ary[i][j]);
    }
  }
}

boolean find(int ary[MAX][MAX], int rows, int cols, int number) {
  int i = 0, 
    j = cols - 1,
    n = 0;
  boolean result = FALSE;

  if(ary == NULL || rows <= 0 || cols <= 0) {
    return result;
  }

  while(i < rows && j >= 0) {
    n = ary[i][j];
    if(number == n) {
      printf("\nary[%d, %d] = %d\n", i, j, n);
      result = TRUE;
      break; 
    }else if(number < n) {
      j -= 1; 
    }else if(number > n) {
      i += 1;
    }
  }
  return result;
}

//1 2 8 9 2 4 9 12 4 7 10 13 6 8 11 15
int main() {
  int ary[MAX][MAX];
  int i = 0, j = 0;

  for(; i < MAX; i++) {
    j = 0;
    for(; j < MAX; j++) {
      scanf("%d", &ary[i][j]);
    }
  }
  showAry(ary);
  find(ary, MAX, MAX, 7);
}