Question

用c语言读取csv文件中的一列数据并求这些数据的平均值

Answer 1

#include <stdio.h>

void main()
{
int i,n=0;
float x[1000],val;
FILE *fp;

if((fp=fopen("test.csv","rt"))==NULL)
{
printf("cannot open file\n");
return;
}
while (1)
{
if(fscanf(fp,"%f,", &val) == EOF) break;
x[n]=val;
n++;
}
fclose(fp);

val=0;
for(i=0;i<n;i++)
val+=x[i];
if(n>0) val=val/n;
printf("%g\n",val);
}