程序的CPU使用率突然飙升,似乎已暂停

时间:2019-04-25 08:25:10

标签: c arrays cpu-usage

我添加了2个功能:

int aiCheckScore(char arr[7][7], int inp, int height, Player player)

int aiFindMostRelevant(char arr[7][7], Player player)

第一个在2D数组中为给定位置评分。如果我们在此位置添加一个元素(不包括我们现在添加的元素),则该分数等于我们连续有多少个相同种类的元素(垂直,水平或对角线,并保持这3个元素中最好的一个)

第二个功能一次检查7个位置,并找到得分最高的位置并将其返回。我尝试添加一些随机性,以使如果2个位置的分数相同,则程序将在30%的时间内选择最后一个(这样就不会总是取第一个)。

在没有增加随机性的地方,代码可以正常运行。一旦添加它,程序将在第12次调用第一个函数后立即暂停。此外,该程序的CPU使用率突然激增,并从之前的5%降至50%。

我修改了几次创建随机性的代码,但似乎没有任何变化。我什至不明白为什么它会引起这样的问题。

我的2个功能是:

int aiCheckScore(char arr[7][7], int inp, int height, Player player) {

    int i, j;
    int score[4] = { 0 };

    //check horizontal score
    for (i = inp - 1; i >= 0; i--) {        //everything left
        if (arr[height][i] != player.symb)
            break;

        ++score[0];
    }
    for (i = inp + 1; i <= 6; i) {          //everything right
        if (arr[height][i] != player.symb)
            break;

        ++score[0];
    }

    //check vertical score (we only have to check down)
    for (i = height + 1; i <= 6; i++) {
        if (arr[i][inp] != player.symb)
            break;

        ++score[1];
    }

    //check diagonal (which starts left and above and goes down and right)
    j = height - 1;
    for (i = inp - 1; i >= 0 && j >= 0; i--) {  //above and left        
        if (arr[j][i] != player.symb)
            break;

        ++score[2];
        --j;
    }
    j = height + 1;
    for (i = inp + 1; i <= 6 && j <= 6; i++) {  //down and right
        if (arr[j][i] != player.symb)
            break;

        ++score[2];
        ++j;
    }

    //check diagonal (which starts left and down and goes up and right)
    j = height + 1;
    for (i = inp - 1; i >= 0 && j <= 6; i--) {  //down and left     
        if (arr[j][i] != player.symb)
            break;

        ++score[3];
        ++j;
    }
    j = height - 1;
    for (i = inp + 1; i <= 6 && j >= 0; i++) {  //up and right
        if (arr[j][i] != player.symb)
            break;

        ++score[3];
        --j;
    }
    int bestscore = score[0];
    for (i = 0; i <= 3; i++) {
        if (score[i] > bestscore)
            bestscore = score[i];
    }
    printf("%d", bestscore);
    return bestscore;
}


int aiFindMostRelevant(char arr[7][7], Player player) {

    int i, height;

    int score[7] = { 0 };

    for (i = 0; i <= 6; i++) {
        height = findHeight(arr, i);

        if (height == -1) {//skip the columns that are full
            score[i] = -100;                            //and give them a very bad score
        }
        else {
            score[i] = aiCheckScore(arr, i, height, player);
        }       
    }

    int bestscore = score[0];
    int bestposition = 0;
    int num;

    for (i = 0; i <= 6; i++) {  
        num = (int)rand() % 10;

        if (score[i] == bestscore) {    //if 2 positions have the same score 

            if (num >= 7) {                 //there is a 30% chance the ai will take the new one to add some variety
                bestposition = i;
            }
        }

        if (score[i] > bestscore) { //always take the position with the best score
            bestscore = score[i];
            bestposition = i;
        }
    }

    return bestposition;
}

对于解决此问题的任何帮助,我们将不胜感激,并且欢迎总体上改善我的代码的任何建议

1 个答案:

答案 0 :(得分:3)

似乎其中一个循环没有增量。 更改:

for (i = inp + 1; i <= 6; i)for (i = inp + 1; i <= 6; ++i)

看看是否有帮助。