编辑代码

#include <iostream>

void printPattern(int n) {
    for (int i = 1; i <= n; i++) {
        for (int j = 1; j <= i; j++) {
            std::cout << i << " ";
        }
        std::cout << std::endl;
    }
}

int main() {
    int n;
    std::cout << "请输入一个正整数n:";
    std::cin >> n;

    printPattern(n);

    return 0;
}