在 C 中打印二維數組

Question

我正在嘗試創建一個 20 人的群體，這些人的名字（或氏族）是從池中隨機生成的。

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

int main()
{
    srand(time(0));
    // dice KOPYA = int dice = rand() % 101;

    int pop = 20; //Population Number
    int genCount = 5; //Number of gens for 1 person in population

    char a[] = "a";
    char gens[] = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ ";
    char target[] = "NuriY";
    char population[pop][genCount];
    char nextPopulation[pop][genCount];

    for(int i=0;i<pop;i++)
    {
        for(int j=0;j<=genCount-1;j++)
        {
            //int dice = rand() % 54;
            //population[i][j] = gens[dice];
            population[i][j] = a[0];
        }
        printf("%2d. : %s\n",i+1,population[i]);
    }

    return 0;
}

但我的結果是我不擅長二維數組。 你能解釋一下我的錯是什么嗎？

我不能嘗試任何事情。

Answer 1

像我一樣用 Null 終止字符串。 https://godbolt.org/z/njqf9s3eG

int main()
{
    srand(time(0));
    // dice KOPYA = int dice = rand() % 101;

    int pop = 20; //Population Number
    int genCount = 5; //Number of gens for 1 person in population

    char a[] = "a";
    char gens[] = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ ";
    char target[] = "NuriY";
    char population[pop][genCount];
    char nextPopulation[pop][genCount];

    for(int i=0;i<pop;i++)
    {
        for(int j=0;j<genCount - 1;j++)
        {
            int dice = rand() % 54;
            population[i][j] = gens[dice];
        }
        population[i][genCount - 1] = 0;
        printf("%2d. : %s\n",i,population[i]);
    }

    return 0;