这是一个分解一个数为质因数的乘积的程序，请问如何将输出结果在文件中显示出来

#include"stdio.h"
#include"stdlib.h"
void zhiyin(int m)
{
    int i,j=0;
    for(i=2;i<=m;i++)
       {
        while(m%i==0)
             {j++;
              if(j==1) printf("%d=%d",m,i);
              else printf("*%d",i);
              m=m/i;
             }
        }
}
main()
{
      FILE *p;
      int m;
      p=fopen("b10_5.out","w");
      scanf("%d",&m);
      zhiyin(m);
      fputs("\n11030304",p);
      fclose(p);
      system("pause");
}

改成这样应该就行了：
#include<stdio.h>
#include<stdlib.h>
void zhiyin(int m)
{
    FILE *p;
    p=fopen("b10_5.txt","w");
    int i,j=0;
    for(i=2;i<=m;i++)
       {
        while(m%i==0)
             {j++;
              if(j==1)
              {
                  printf("%d=%d",m,i);
                  fprintf(p,"%d=%d",m,i);
              }
              else
              {
                  printf("*%d",i);
                  fprintf(p,"*%d",i);
              }
              m=m/i;
             }
        }
    printf("\n");
    fclose(p);
}
int main()
{
     
      int m;
      scanf("%d",&m);
      zhiyin(m);
      system("pause");
      return 0;
}

#include<stdio.h>
#include<stdlib.h>
void zhiyin(int m)
{
    FILE *p;int i,j=0;//这里不能放进打开的文件中
    p=fopen("b10_5.txt","w");
   
    for(i=2;i<=m;i++)
       {
        while(m%i==0)
             {j++;
              if(j==1)
              {
                  printf("%d=%d",m,i);
                  fprintf(p,"%d=%d",m,i);／／这里可以不要
              }
              else
              {
                  printf("*%d",i);
                  fprintf(p,"*%d",i);／／这里也可以不要
              }
              m=m/i;
             }
        }
    printf("\n");
    fclose(p);
}
int main()
{
     
      int m;
      scanf("%d",&m);
      zhiyin(m);
      system("pause");
      return 0;
}
不好意思，借花献佛