下列哪一项更可取
file=fopen(argv[1],"r");
arr=(unsigned int *)malloc(4);
while(!feof(file))
{
++arr_size;
arr=(unsigned int *)realloc(arr,arr_size*sizeof(unsigned int)
fscanf(file,"%u\n",&arr[arr_size-1]);
}
fclose(file);
或者这个
arr=(unsigned int *)malloc(some_size*sizeof(unsigned int));
file=fopen(argv[1],"r");
arr=(unsigned int *)malloc(4);
while(!feof(file))
{
++arr_size;
fscanf(file,"%u\n",&arr[arr_size-1]);
}
fclose(file);
最佳答案
为什么不采用第三种方法 - 计算出打开文件时需要多少内存?
关于c - 多次使用 realloc(),我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/7106022/