c语言四则运算出题器(共16页).doc

精选优质文档-倾情为你奉上#include#include#includeint a,n,nright=0,nwrong=0,flag5,flag3=1,flag6=0,mark,etime=0,etime1,etime2;char op,choice;void award() char c; if(mark=100) /*输出笑脸等不同奖励*/ c=rand()%2+1; printf(%28c %21cn,c,c); c=rand()%2+1; printf(%26c %3c %17c %3cn,c,c,c,c); c=rand()%2+1; printf(%24c %7c %13c %7cn,c,c,c,c); c=rand()%2+1; printf(nn);