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gcc -Wall hellocpp.cpp -lstdc++
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#include <stdio.h>
int
main(void)
{
  printf("Hello, world!\n");
  return 0;
}
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$ gcc -Wall hello.c -o hello
¸ÃÃüÁÎļþ‘hello.c’ÖеĴúÂë±àÒëΪ»úÆ÷Âë²¢´æ´¢ÔÚ¿ÉÖ´ÐÐÎļþ ‘hello’ÖС£»úÆ÷ÂëµÄÎļþÃûÊÇͨ¹ý -o
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¡£±àÒëÆ÷ÓкܶàÆäËûµÄ¾¯¸æÑ¡Ïµ« -Wall
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$ ./hello
Hello, world!
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´úÂë:
#include <stdio.h>
int
main (void)
{
  printf ("Two plus two is %f\n", 4);
  return 0;
}
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