参考代码:
#include<cstdio>
int main()
{
int n;//接收输入的数字
int a = 0, b = 0, c = 0;//分别记录百位十位个位上的数
scanf("%d", &n);
a = n / 100;
b = (n / 10) % 10;
c = n % 10;
for (int i = 0; i < a; i++)
{
printf("B");
}
for (int i = 0; i < b; i++)
{
printf("S");
}
for (int i = 1; i <= c; i++)
{
printf("%d", i);
}
printf("
");
}