|
发表于 2022-10-17 21:14:50
|
显示全部楼层
本楼为最佳答案
本帖最后由 jackz007 于 2022-10-17 21:40 编辑
你还真把内层循环的条件给写错了
- #include <stdio.h>
- int main(void)
- {
- int a , b ;
- for(a = 1 ; a < 10 ; a ++) {
- printf("1x%d=%2d" , a , a) ;
- for(b = 2 ; b <= a ; b ++) printf(" %dx%d=%2d" , b , a , a * b) ;
- printf("\n") ;
- }
- }
复制代码
编译、运行实况:
- D:\[00.Exerciese.2022]\C>g++ -o x x.c
- D:\[00.Exerciese.2022]\C>x
- 1x1= 1
- 1x2= 2 2x2= 4
- 1x3= 3 2x3= 6 3x3= 9
- 1x4= 4 2x4= 8 3x4=12 4x4=16
- 1x5= 5 2x5=10 3x5=15 4x5=20 5x5=25
- 1x6= 6 2x6=12 3x6=18 4x6=24 5x6=30 6x6=36
- 1x7= 7 2x7=14 3x7=21 4x7=28 5x7=35 6x7=42 7x7=49
- 1x8= 8 2x8=16 3x8=24 4x8=32 5x8=40 6x8=48 7x8=56 8x8=64
- 1x9= 9 2x9=18 3x9=27 4x9=36 5x9=45 6x9=54 7x9=63 8x9=72 9x9=81
- D:\[00.Exerciese.2022]\C>
复制代码
难道你要的是这个?
- #include <stdio.h>
- int main(void)
- {
- int a , b ;
- for(a = 9 ; a ; a --) {
- printf("1x%d=%2d" , a , a) ;
- for(b = 2 ; b <= a ; b ++) printf(" %dx%d=%2d" , b , a , a * b) ;
- printf("\n") ;
- }
- }
复制代码
编译、运行实况:
- D:\[00.Exerciese.2022]\C>g++ -o x x.c
- D:\[00.Exerciese.2022]\C>x
- 1x9= 9 2x9=18 3x9=27 4x9=36 5x9=45 6x9=54 7x9=63 8x9=72 9x9=81
- 1x8= 8 2x8=16 3x8=24 4x8=32 5x8=40 6x8=48 7x8=56 8x8=64
- 1x7= 7 2x7=14 3x7=21 4x7=28 5x7=35 6x7=42 7x7=49
- 1x6= 6 2x6=12 3x6=18 4x6=24 5x6=30 6x6=36
- 1x5= 5 2x5=10 3x5=15 4x5=20 5x5=25
- 1x4= 4 2x4= 8 3x4=12 4x4=16
- 1x3= 3 2x3= 6 3x3= 9
- 1x2= 2 2x2= 4
- 1x1= 1
- D:\[00.Exerciese.2022]\C>
复制代码 |
|