/*-------------------------------------------------------------- HelloMsg.c -- Displays "Hello, Windows 98!" in a message box (c) Charles Petzold, 1998 --------------------------------------------------------------*/ #include <windows.h> int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance, PSTR szCmdLine, int iCmdShow) { MessageBox (NULL, TEXT ("Hello, Windows 98!"), TEXT ("HelloMsg"), 0) ; return 0 ; }
/*----------------------------------------------------- SCRNSIZE.C -- Displays screen size in a message box (c) Charles Petzold, 1998 -----------------------------------------------------*/ #include <windows.h> #include <tchar.h> #include <stdio.h> int CDECL MessageBoxPrintf (TCHAR * szCaption, TCHAR * szFormat, ...) { TCHAR szBuffer [1024] ; va_list pArgList ; // The va_start macro (defined in STDARG.H) is usually equivalent to: // pArgList = (char *) &szFormat + sizeof (szFormat) ; va_start (pArgList, szFormat) ; // The last argument to wvsprintf points to the arguments _vsntprintf (szBuffer, sizeof (szBuffer) / sizeof (TCHAR), szFormat, pArgList) ; // The va_end macro just zeroes out pArgList for no good reason va_end (pArgList) ; return MessageBox (NULL, szBuffer, szCaption, 0) ; } int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance, PSTR szCmdLine, int iCmdShow) { int cxScreen, cyScreen ; cxScreen = GetSystemMetrics (SM_CXSCREEN) ; cyScreen = GetSystemMetrics (SM_CYSCREEN) ; MessageBoxPrintf (TEXT ("ScrnSize"), TEXT ("The screen is %i pixels wide by %i pixels high."), cxScreen, cyScreen) ; return 0 ; }
#include <stdio.h> int main() { int a[10]; int i; for(i=0;i<10;i++) { scanf("%d",&a[i]); //} //for(i=0;i<10;i++) //{ printf("%d",a[i]); } }
#include<stdio.h> main(void) { int a,i=5,b=10; printf("a=b值为%d ",a=b); printf("a==b值为%d ",a==b); } int a = 2;//给a赋值2 int b = a;//给b赋值a,等效于:给b赋值2 if(a==b){//判断a是否等于b printf("a等于b"); }else{ printf("a不等于b"); } “=”,和“==”理解不