( 40 )有以下程序#include stdio.hmain (){ FILE *fp;char str[10];fp=fopen ( " myfile.dat " , " w " ) ;fputs ( " abc " ,fp ) ;fclose ( fp ) ;fpfopen ( " myfile.dat:, " a+ " ) ;fprintf ( fp, " %d " ,28 ) ;rewind ( fp ) ;fscanf ( fp, " %s " ,str ) ; puts ( str ) ;fclose ( fp ) ;}程序运行后的输出结果是A ) abcB ) 28cC ) abc28D )因类型不一致而出错

( 40 )有以下程序

#include <stdio.h>

main ()

{ FILE *fp;char str[10];

fp=fopen ( " myfile.dat " , " w " ) ;

fputs ( " abc " ,fp ) ;fclose ( fp ) ;

fpfopen ( " myfile.dat:, " a+ " ) ;

fprintf ( fp, " %d " ,28 ) ;

rewind ( fp ) ;

fscanf ( fp, " %s " ,str ) ; puts ( str ) ;

fclose ( fp ) ;

}

程序运行后的输出结果是

A ) abc

B ) 28c

C ) abc28

D )因类型不一致而出错


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