更多"有以下程序#include main( ) FILE *fp; int"的相关试题:
[单项选择]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
[单项选择]有以下程序
#include
main( )
FILE *fp; int a[10]=1,2,3,i,n;
fp=fopen("dl.dat","w");
for(i=0;i<3;i++) fprintf(fp,"%d",a[i]);
fprintf(fp,"/n");
fclose(fp);
fp=fopen("dl.dat","r");
fscanf(fp,"%d",&n);
fclose(fp);
printf("%d/n",n);程序的运行结果是______。
A. 12300
B. 123
C. 1
D. 321
[单项选择]有以下程序:
#include
main( )
{ FILE *fp; int i,k,n; fp=fopen("data.dat","w+"); for(i=1;i<6;i++)
{fprintf(fp,"%d ",i);
if(i%3==0) fprintf(fp,"/n");
}
rewind(fp);
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. 0 0
B. 123 45
C. 1 4
D. 1 2
[单项选择]有以下程序
#include
main( )
{ FILE *fp;
int k,n,i,a[6]={1,2,3,4,5,6};
fp=fopen("d2.dat","w");
for(i=0;i<6;i++) fprintf(fp, "%d,",a[i]);
fclose(fp);
fp=fopen("d2.dat","r");
for(i=0;i<3;i++) fscanf(fp, "%d%d",&k,&n);
fclose(fp);
printf("%d,%d/n",k,n);
}
程序运行后的输出结果是_______。
A. 1,2
B. 3,4
C. 5,6
D. 123,456
[单项选择]有以下程序
#include
main( )
{ FILE *fp; int i, a[6] = {1,2,3,4,5,6};
fp=fopen("d2.dat", "w+");
for(i = 0; i < 6; i++) fprintf(fp, "%d/n", a[i]);
rewind(fp);
for(i = 0; i < 6; i++) fscanf(fp, "%d/n", &a[5 - i]);
fclose(fp);
for(i = 0; i < 6; i++) printf("%d,", a[i]);
}
程序运行后的输出结果是
A. 4,5,6,1,2,3,
B. 1,2,3,3,2,1,
C. 1,2,3,4,5,6,
D. 6,5,4,3,2,1,
[单项选择]有以下程序
#include <stdio.h>
main( )
FILE *fp; int a[10]=1,2,3,i,n;
fp=fopen("d1.daf","w");
for(i=0;i<3;i++) fprintf(fp,"%d",a[i]);
fprintf(fp,"/n");
fclose(fp);
fp=fopen("d1.dat","r");
fscanf(fp,"%d",&n);
fclose(fp);
printf("%d/n",n);
程序的运行结果是
A. 12300
B. 123
C. 1
D. 321
[单项选择]有以下程序
#include<stdiu.h>
main( )
FILE*fp;int a[10]=1,2,3,i,n;
fp=fopen("d1.dat","w");
for(i=0;i<3;i++)fprintf(fp,"%d",a[i]);
fprintf(fp,"/n");
fclose(fp);
fp=fopen("d1.dat","r"):
fscanf(fp,"%d",&n);
fclose(fp);
printf("%d/n",n);
程序的运行结果是( )。
A. 12300
B. 123
C. 1
D. 321