C语言建立和读取txt文件的数组

Question

比如txt文件中有1 2 3 4
5 6 7 8
怎么读取他们。。
还有怎么建立他们
谢谢大家！~~

Answer 1

void main(void)
{
FILE *fp = fopen("arr.txt", "rb");

int num;

while(!feof(fp))
{
fscanf(fp,"%d",&num);
printf("%d ",num);
}
fclose(fp);
}

Answer 2

FILE *p = fopen("f.txt");

int num;

while(!feof(p))
{
fscanf(p,"%d",&num);
printf("%d ",num);
}