程序记录

程序1：

#include "stdafx.h"void  main(int argc, _TCHAR* argv[]){int i;int sum=0;for(i=1;i<=100;i++){sum=sum+i*(i+1);}printf("1*2+2*3+3*4+...+100*101=%d\n",sum);}

程序2：

#include "stdafx.h"int main(int argc, _TCHAR* argv[]){  int i=1;   int sum=0;   while(i<=100)    { sum=sum+i;  i++;  }  printf("sum=%d\n",sum);}

程序3：

#include "stdafx.h"#include<stdlib.h>int main(int argc, _TCHAR* argv[]){int r;int g;r=rand();printf("Input a number:");scanf_s("%d",&g);if(g==r)printf("Right!\n");elseprintf("The number is:%d,You are wrong!\n",r);}

程序4：

#include "stdafx.h"#include<stdlib.h>int main(int argc, _TCHAR* argv[]){int r;int g;r=rand();printf("Input a number:");scanf_s("%d",&g);if(g==r)printf("Right!\n");}