先输入要转换的十进制数，在输入转换的几进制
#include<stdio.h> //处理10以内的进制 void func1(int m, int n) { int a[32] = { 0 }; int i = 0; while (m > 0) { a[i] = m % n; m = m / n; i++; } for (int j = i - 1; j >= 0; j--) printf("%d", a[j]); } //处理16进制 void func2(int m, int n) { int a[32] = { 0 }; int i = 0; while (m > 0) { a[i] = m % n; m = m / n; i++; } for (int j = i - 1; j >= 0; j--) if (a[j] >= 10) { printf("%c", a[j] + 55); //10+55就是A的ascii码表值 } else { printf("%d", a[j]); } printf("\n"); } int main() { int a, b; scanf("%d", &a); scanf("%d", &b); if (b < 10) { func1(a, b); } else { func2(a, b); } return 0; }