scanf sample code
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;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;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;}
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