scanf sample code

yaojingguo

scanf can be used in very complicated ways.

#include <stdio.h>void one() {  int a, b;  printf("Input: ");  scanf("%dxx%d", &a, &b);  printf("a = %d, b = %d\n", a, b);}void two() {  char array[] = {'a', 'b', '\0'};  printf("array: %s\n", array);  printf("Input: ");  scanf("%2c", array);  printf("Result: %s\n", array);}void three() {  int result;  printf("Input: ");  scanf("%2d", &result);  printf("result: %d\n", result);}void four() {  char str[80];  int i;  printf("Enter your family name: ");  scanf("%s", str);  printf("Enter your age: ");  scanf("%d", &i);  printf("Mr. %s, %d years old.\n", str, i);  printf("Enter a hexadecimal number: ");  scanf("%x", &i);  printf("You have entered %#x (%d).\n", i, i);}void five() {  char str[10];  printf("Input a string: ");  scanf("%5s", str);  printf("result: %s\n", str);}void six() {  char c;  printf("Input a character: ");  scanf("%c%*[^\n]", &c);  printf("The character: %c\n", c);}void seven() {  int i = 0;  printf("Input: ");  scanf("%*[^0-9] %d", &i);  printf("i: %d\n", i);}int main(int argc, const char *argv[]) {  seven();  return 0;}