二进制输出

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#include <stdio.h>   void print_binary(unsigned int n) {     for (int i = sizeof(n) * 8 - 1; i >= 0; i--) {         printf("%d", (n >> i) & 1);     }     printf("\n"); } void print_binary2(int n) {     printf("%#0*x\n", sizeof(n) * 2, n); } int main() {     unsigned int n = 10;     print_binary2(n);     return 0; }