for循环嵌套
求助， 9*9乘法表把我搞懵了看不懂代码了能帮我解释一下吗 还有后面的k代表的是什么？另外写循环嵌套有什么技巧吗能保证理清思路 谢谢大佬了 跟着代码一步一步走，你不走流程；解释不来，解释了你也不懂。 本帖最后由 bin554385863 于 2019-10-22 23:27 编辑
#include <iostream>
int main(int argc, char const *argv[])
{
for (size_t i = 1; i < 10; i++)//控制行
{
for (size_t j = 1; j <= i; j++)//控制列
{
printf("%dX%d=%2d", j, i, i * j);
}
printf("\n");//内层每完成i次循环,外层打印一次换行
}
return 0;
}
---------------------------------------------------------------------------------------------------------------
Microsoft Windows [版本 10.0.16299.1087]
(c) 2017 Microsoft Corporation。保留所有权利。
E:\Users\86184\Documents\Code>c:\Users\86184\.vscode\extensions\ms-vscode.cpptools-0.26.0\debugAdapters\bin\WindowsDebugLauncher.exe --stdin=Microsoft-MIEngine-In-5kosn4ur.fx4 --stdout=Microsoft-MIEngine-Out-umo3qoeh.knl --stderr=Microsoft-MIEngine-Error-kyifrxzn.yov --pid=Microsoft-MIEngine-Pid-dw0aq1lg.2ni "--dbgExe=E:\My Program\MinGW\bin\gdb.exe" --interpreter=mi
1X1= 1
1X2= 22X2= 4
1X3= 32X3= 63X3= 9
1X4= 42X4= 83X4=124X4=16
1X5= 52X5=103X5=154X5=205X5=25
1X6= 62X6=123X6=184X6=245X6=306X6=36
1X7= 72X7=143X7=214X7=285X7=356X7=427X7=49
1X8= 82X8=163X8=244X8=325X8=406X8=487X8=568X8=64
1X9= 92X9=183X9=274X9=365X9=456X9=547X9=638X9=729X9=81
E:\Users\86184\Documents\Code>
=======================================================
倒序
#include <iostream>
int main(int argc, char const *argv[])
{
for (size_t i = 9; i >= 1; i--) //控制行
{
for (size_t j = 1; j <= i; j++) //控制列
{
printf("%dX%d=%2d", j, i, i * j);
}
printf("\n"); //内层每完成i次循环,外层打印一次换行
}
return 0;
}
-----------------------------------------------------------------------------------------------------------------------------
Microsoft Windows [版本 10.0.16299.1087]
(c) 2017 Microsoft Corporation。保留所有权利。
E:\Users\86184\Documents\Code>c:\Users\86184\.vscode\extensions\ms-vscode.cpptools-0.26.0\debugAdapters\bin\WindowsDebugLauncher.exe --stdin=Microsoft-MIEngine-In-s1vqqpin.jpr --stdout=Microsoft-MIEngine-Out-qusqcgs1.ind --stderr=Microsoft-MIEngine-Error-awammhke.fmu --pid=Microsoft-MIEngine-Pid-lyi5ydnv.4hm "--dbgExe=E:\My Program\MinGW\bin\gdb.exe" --interpreter=mi
1X9= 92X9=183X9=274X9=365X9=456X9=547X9=638X9=729X9=81
1X8= 82X8=163X8=244X8=325X8=406X8=487X8=568X8=64
1X7= 72X7=143X7=214X7=285X7=356X7=427X7=49
1X6= 62X6=123X6=184X6=245X6=306X6=36
1X5= 52X5=103X5=154X5=205X5=25
1X4= 42X4= 83X4=124X4=16
1X3= 32X3= 63X3= 9
1X2= 22X2= 4
1X1= 1
E:\Users\86184\Documents\Code>
页:
[1]