题目内容
文本文件quiz.txt的内容为"Programming"(不包含引号),以下程序段的运行结果是______。FILE*fp;char*str;if((fp=fopen("quiz.txt","r"))!=NULL)str=fgets(str,7,fp);printf("%s",str);
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文件操作的一般步骤是_________。
下面程序的运行结果是_________。#includemain(){FILE*fp;inta=2,b=4,c=6,k,n;fp=fopen("test.dat","w");fprintf(fp,"%d\n",a);fprintf(fp,"%d%d\n",b,c);fclose(fp);fp=fopen("test.dat","r");fscanf(fp,"%d%*d%d",&k,&n);printf("%d%d\n",k,n);fclose(fp);}
对于以下程序,说法正确的是___________。#includemain(){FILE*fp;fp=fopen("quiz.txt","w");if(fp!=NULL){fprintf(fp,"%s\n","success!");fclose(fp);printf("ok!");}}
以下程序运行后,文件test.txt的内容是_______。#includemain(){FILE*fp;charstr[][10]={"first","second"};fp=fopen("test.txt","w");if(fp!=NULL)fprintf(fp,"%s",str[0]);fclose(fp);fp=fopen("test.txt","w");if(fp!=NULL)fprintf(fp,"%s",str[1]);fclose(fp);}
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