Questions

The multiplier effect means that "An effect in economics in which an increase in spending produces an increase in national income and consumption greater than the initial amount spent."

The error is in third part. “unease” is wrong expression because it is in noun form. Correct usage will be “with growing “uneasiness”, which is an adjective qualifying wait. Which means as time passed while I waited, I grew more and more uneasy.

Sociologists define the concept of "race" as a socially constructed category composed of people who share biologically transmitted traits that members of a society consider important.

Expedite means to do an action or work to be completed quickly or sooner. The opposite of expedite means late, delay, hinder,...

#include<stdio.h>
int main(){
  FILE *p,*q;
  char file1[20],file2[20];
  char ch;
  printf("\nEnter the source file name to be copied:");
  gets(file1);
  p=fopen(file1,"r");
  if(p==NULL){
      printf("cannot open %s",file1);
      exit(0);
  }
  printf("\nEnter the destination file name:");
  gets(file2);
  q=fopen(file2,"w");
  if(q==NULL){
      printf("cannot open %s",file2);
      exit(0);
  }
  while((ch=getc(p))!=EOF)
      putc(ch,q);
  printf("\nCOMPLETED");
  fclose(p);
  fclose(q);
 return 0;
}