下列程序是处理C盘根目录下的a.txt文件,统计该文件中字符的个数。请填空,使程序完整。 #include <stdio.h> main() { FILE*fp;char ch; long num=0; if(______) { printf("Can’t open file !\n"); exit(0); } while(______) { ch=fgetc(fp); ______; } printf("%d",num); fclose(fp); }
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MIDI enables people to use ______ computers and electronic musical instruments. There are actually three components to MIDI, the communications " ______", the Hardware Interface and a distribution ______ called "Standard MIDI Files". In the context of the WWW, the most interesting component is the ______ Format. In principle, MIDI files contain sequences of MIDI Protocol messages. However, when MIDI Protocol ______ are stored in MIDI files, the events are also time-stamped for playback in the proper sequence. Music delivered by MIDI files is the most common use of MIDI today.
A. messages
B. packets
C. frame
D. information
MIDI enables people to use ______ computers and electronic musical instruments. There are actually three components to MIDI, the communications " ______", the Hardware Interface and a distribution ______ called "Standard MIDI Files". In the context of the WWW, the most interesting component is the ______ Format. In principle, MIDI files contain sequences of MIDI Protocol messages. However, when MIDI Protocol ______ are stored in MIDI files, the events are also time-stamped for playback in the proper sequence. Music delivered by MIDI files is the most common use of MIDI today.
A. Video
B. Faxmail
C. Graphic
D. Audio
MIDI enables people to use ______ computers and electronic musical instruments. There are actually three components to MIDI, the communications " ______", the Hardware Interface and a distribution ______ called "Standard MIDI Files". In the context of the WWW, the most interesting component is the ______ Format. In principle, MIDI files contain sequences of MIDI Protocol messages. However, when MIDI Protocol ______ are stored in MIDI files, the events are also time-stamped for playback in the proper sequence. Music delivered by MIDI files is the most common use of MIDI today.
A. personal
B. electronic
C. multimedia
D. network
某软件工程项目各开发阶段工作量的比例如下表所示 需求分析 概要设计 详细设计 编码 测试 0.29 0.13 0.17 0.10 0.31 假设当前己处于编码阶段,3000行程序己完成了1200行,则该工程项目开发进度已完成的比例是______。
A. 29%
B. 45%
C. 59%
D. 63%