缥缈之间

The C Programming Language (Second Edition) Brian W.Kernighan & Dennis M.RitchieThe only way to learn a new programming language is by writing programs in it.

This is the first C program.    #include     main()    {        printf("hello, world/n");    }Getting Started.    #include     main()    {        printf("Getting Started./nC in Practice.");    }

/* C in practice *//* C1.2 Fahrenheit-Celsius Table */#include/* print Fahrenheit-Celsius table   for fahr = 0, 20, ..., 300 */main(){    int fahr, celsius;    int lower, upper, step;    lower = 0;   

/* C in Practice *//* C1.6 File Copying */#includemain(){      int c;            c = getchar();      while (c != EOF)      {            putchar(c);            c = getchar();      }}

/* C in Practice *//* C1.7 copy input to output */#includemain(){      int c;            while ((c = getchar()) != EOF)      {            putchar(c);      }}

/* C in Practice *//* C1.8 Character counting */#includemain(){      long nc;            nc = 0;      while ((getchar()) != EOF)      {            ++nc;      }            printf("%ld", nc);}

/* C in Practice *//* C1.9 Character counting    using a for statement */   #includemain(){      double nc;            for (nc=0; getchar() != EOF; ++nc)          ;      printf("%.0f", nc);}