fig17_12.c

C程序设计经典教程第5版程序示例,比较适合初级c语言的学生

// Fig 17.12: fig17_12.c
// Using implicit int return type in C89
#include <stdio.h>

returnImplicitInt(); // prototype with unspecified return type
int demoImplicitInt(x); // prototype missing a parameter name type

int main( void )
{
   int x;
   int y;
   
   // assign data of unspecified return type to int
   x = returnImplicitInt(); 
   
   // pass in an int to a function with an unspecified type
   y = demoImplicitInt(82);
   
   
   printf( "x is %d\n", x );
   printf( "y is %d\n", y );
   return 0; // indicates successful termination

} // end main

returnImplicitInt() 
{
   return 77; // returning an int when return type is not specified
} // end function returnImplicitInt

int demoImplicitInt(x)
{
   return x;  
} // end function demoImplicitInt



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