程序作业

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程序1

[cpp] view plaincopyprint?#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");      else          printf("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");  }