题目内容
(请给出正确答案)
[主观题]
有以下程序 #include<stdio.h> main() {FILE*fp;inti=20,j=30,k,n; fp=fopen("d1.
有以下程序
#include <stdio.h>
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
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