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Program to read numbers from two files using fscanf function and write it in another file using fprintf function in ascending order

Posted By: Daniel Evans     Category: C Programming     Views: 4280

Write a program to read numbers from two files using fscanf function and write it in another file using fprintf function in ascending order.

Code for Program to read numbers from two files using fscanf function and write it in another file using fprintf function in ascending order in C Programming

# include<stdio.h>
# include<conio.h>
void main(int argc, char *argv[])
{
    FILE *ptf1,*ptf2,*ptf3;
    int a,b;
    clrscr();
    a=b=0;

    ptf1=fopen(argv[1],"r");
    ptf2=fopen(argv[2],"r");
    ptf3=fopen(argv[3],"w");

    fscanf(ptf1,"%d",&a);
    fscanf(ptf2,"%d",&b);

    while(1)
    {
        if(b==0 || a==0)
            break;
        if(a<b)
        {
            fprintf(ptf3,"%d ",a);
            fscanf(ptf1,"%2d",&a);
        }
        if(a>b)
        {
            fprintf(ptf3,"%d ",b);
            fscanf(ptf2,"%2d",&b);
        }
        if(a==b)
        {
            fprintf(ptf3,"%d ",a);
            fscanf(ptf1,"%2d",&a);
            fscanf(ptf2,"%2d",&b);
        }
    }
    if(a==0 & b!=0)
    {
        while(1)
        {
            fprintf(ptf3,"%d ",b);
            //putw(b,ptf3);//b=getw(ptf2);
            fscanf(ptf2,"%2d",&b);
            if(b==0)
                break;
        }
    }
    if(a!=0 & b==0)
    {
        while(1)
        {
            fprintf(ptf3,"%d ",a);
            fscanf(ptf1,"%2d",&a);
            if(a==0)
                break;
        }
    }
    fclose(ptf1);
    fclose(ptf2);
    fclose(ptf3);
}
  
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Daniel Evans
Daniel Evans author of Program to read numbers from two files using fscanf function and write it in another file using fprintf function in ascending order is from London, United Kingdom.
 
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