#include <stdio.h>
int main() {
int N=5;
// 检查N的范围
if (N > 0 && N < 10) {
// 外层循环控制行数
for (int i = 1; i <= N; i++) {
// 打印空格对齐
for (int j = 0; j < N - i; j++) {
}
// 打印数字
for (int x = 0; x < i; x++) {
}
// 换行
}
} else {
}
return 0;
}
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