stdin、stdout & printf、scanf & fprintf、fscanf

#include<stdio.h>int main(int argc, char * argv[]){int i;//printf("Input an integer: ");fprintf(stdout, "Input an integer: ");//if(scanf("%d", &i))if(fscanf(stdin, "%d", &i))//printf("The integer read was: %d\n",i);fprintf(stdout, "The integer read was: %d\n",i);else{//printf("Error reading an integer from stdin.\n");fprintf(stderr, "Error reading an integer from stdin.\n");exit(1);}return 0;}