编辑代码

#include <stdio.h>

void printTriangle_recursion(int n) {
    if (n <= 0) {
        return;
    }
    
    printTriangle_recursion(n - 1);
    for (int i = 0; i < n; i++) {
        printf("%d ", n);
    }
    printf("\n");
}

int main() {
    int n = 6;
    printTriangle_recursion(n);
    return 0;
}