promedio.cpp

来自「Topics Practices: Programming and Nume」· C++ 代码 · 共 22 行

#include<stdio.h>
#include<conio.h>
main()
{
      FILE *fp;
      int n,i;
      float suma, x, prom;
      fp= fopen("pepe.txt", "r");
      fscanf(fp,"%d",&n);  
      suma=0;       
      for (i=0; i<n; ++i)
      {
          fscanf(fp, "%f", &x);
          suma=suma+x;
          }
          fclose(fp);
          prom=suma/n;
          printf("el promedio es %f", prom);
          getch();
          }