file io - C Program fscanf skips lines -

this program takes file , supposed transfer files contents struct

the contents of file is:

11.0,  11.0, 11.0,  14.0 22.4,  22.4, 22.4,  28.9 12.7,  13.8, 14.6,  14.5 23.5,  13.5, 42.5,  21.8 18.0,  16.0, 21.0,  42.9 21.0,  21.0, 21.0,  100.0    

the output of file is:

22.4,  22.4, 22.4, 28.9 23.5,  13.5, 42.5, 21.8 21.0,  21.0, 21.0, 100.0 

it skipping every other line contents of file , not sure how fix issue.

#include <stdio.h>  #define max_items 100  struct item {     double item1;     double item2;     double item3;     double item4; };  int main(void) {     struct item myitems[max_items];      int = 0;      file *input;     input = fopen("items.txt", "r");      if(input == null) {         printf("error opening file\n");         return 1;     }      while(fscanf(input, " %lf,%lf,%lf,%lf", &myitems[i].item1,&myitems[i].item2,                 &myitems[i].item3, &myitems[i].item4) == 4)      {        fscanf(input, " %lf,%lf,%lf,%lf", &myitems[i].item1,&myitems[i].item2,                  &myitems[i].item3, &myitems[i].item4);        printf("%lf %lf %lf %lf\n", myitems[i].item1, myitems[i].item2,                   myitems[i].item3, myitems[i].item4);        i++;     }    fclose(input);   return 0; } 

the problem occur because call fscanf twice , print results of latter. you instead this

while(fscanf(input, " %lf,%lf,%lf,%lf", &myitems[i].item1,&myitems[i].item2,                 &myitems[i].item3, &myitems[i].item4) == 4) {      printf("%lf %lf %lf %lf\n", myitems[i].item1, myitems[i].item2,                   myitems[i].item3, myitems[i].item4);     i++; }