40）有以下程序
#include
main()
{ FILE *fp; int i=20,j=30,k,n;
fp=fopen("d1.dat","w");
fprintf(fp,"%d\n",i);fprintf(fp,"%d\n",j);
fclose(fp);
fp=fopen("d1.dat","r");
fscanf(fp,"%d%d",&k,&n); printf("%d %d\n",k,n);
fclose(fp); }
程序运行后的输出结果是
(A)20 30
(B)20 50
(C)30 50
(D)30 20
阿摩線上測驗
登入