pragma mark 數(shù)組－遍歷

pragma mark 概念

/**
 取出數(shù)組中的所有的值,稱之為 遍歷
 */

pragma mark 代碼

#include <stdio.h>
int main()
{
    //取出數(shù)組中的所有的值,稱之為 遍歷
    int scores[8] = {1,1,3,5,7,9,11,13};
    /*
    printf("scores[0] = %i\n",scores[0]);
    printf("scores[1] = %i\n",scores[1]);
    printf("scores[2] = %i\n",scores[2]);
    printf("scores[3] = %i\n",scores[3]);
    printf("scores[4] = %i\n",scores[4]);
    */
#pragma mark - 數(shù)組遍歷
#pragma mark for循環(huán)遍歷
    // 注意: 在遍歷數(shù)組的時候,盡量不要把遍歷的次數(shù)寫死
    // 遍歷多少次應該由數(shù)組來決定,也就是說遍歷多少次應該通過數(shù)組計算得出
#pragma mark 計算數(shù)組的元素個數(shù)
    /*
    printf("scores = %lu\n",sizeof(scores)); // 計算出數(shù)組占用的總字節(jié)數(shù)
    printf("scores[0]占用的字節(jié) = %lu\n",sizeof(scores[0]));// 計算出數(shù)組中某一個元素占用額的字節(jié)數(shù)
    printf("一個由多少個元素: %lu\n",sizeof(scores)/sizeof(scores[0]));
     */
    
    // 動態(tài)計算數(shù)組的元素個數(shù)
    int length = sizeof(scores) / sizeof(scores[0]);
    for (int i = 0; i<length; i++)
    {
        printf("scores[%i] = %i\n",i,scores[i]);
    }
    return 0;
}