I created a file with content: '12 7 -14 3 -8 10'
I want to output all numbers of type integer. But after compiling and running the program, I get only the first number '12'
Here's my code:
#include <stdio.h>
main(){
FILE *f;
int x;
f=fopen("C:\\Users\\emachines\\Desktop\\ind\\in.txt", "r");
fscanf(f, "%d", &x);
printf("Numbers: %d", x);
fclose(f);
}
What am I doing wrong?
You scan one integer from the file using fscanf
and print it.You need a loop to get all the integers. fscanf
returns the number of input items successfully matched and assigned.In your case, fscanf
returns 1 on successful scanning. So just read integers from the file until fscanf
returns 0 like this:
#include <stdio.h>
int main() // Use int main
{
FILE *f;
int x;
f=fopen("C:\\Users\\emachines\\Desktop\\ind\\in.txt", "r");
if(f==NULL) //If file failed to open
{
printf("Opening the file failed.Exiting...");
return -1;
}
printf("Numbers are:");
while(fscanf(f, "%d", &x)==1)
printf("%d ", x);
fclose(f);
return(0); //main returns int
}
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