#include<stdio.h>
#include<stdbli.h>
#include<time.h>
#define N 300
int main(int argc,const char*argv[])
{
int i,j;
int n1,n2,bs;
char ops[4]={'+','-','*','/'};
srand((unsigned)time(NULL));
for(i=0;i<N;i++)
{
n1=rand()%100;
j=rand()%4;
n2=rand()%100+1;
if(j==3)
{
bs=rand()%25+1;
n1=bs*2;
}
printf("%d%c%d= ",n1,ops[j],n2);
}
return 0;
}