parsing - c language : read file content as numbers and add them together -

i have following in text file called: values.txt

1 4  2.5 3.76 122 10 277.543  165.4432 

i trying read content of text file, , add each 2 pairs , output result ... output :

1 pair:(1, 4) = 5  2 pair:(2.5, 3.76)= 6.26 

and on ..

i opening file

int c; file myfile;   myfile= fopen("values.txt", "r");  if ( myfile == null ) {    printf("cannot open text file\n");   return 1;  }  double aa,bb; while ( (c = getc(myfile) ) != eof ) {      // here should output how? } 

any appreciated ..

language = c

the following code expect. myfile should declared file*. fopen returns pointer file structure. if file large, recommend reading in buffers of big size (eg: 65535 etc) , parse char char , convert float values. reduces system call overhead takes more time processing text float values.

#include <stdio.h> #include <string.h>  main(int argc, char *argv[]) {     file* myfile;       myfile = fopen("values.txt", "r");      if ( myfile == null ) {          printf("cannot open text file\n");         return 1;      }      double aa,bb;     while (2 == fscanf(myfile, "%lf %lf", &aa, &bb)) {         printf("%lf\n", aa+bb);     }     return 0; }