例
嵌套调用:
qian1( int x, int y )
{ int c, s, t ;
s=x+y; t=x-y;
c=qian2(s, t);
return (c);
printf("c=%d\n", c);
}
qian2( int x , int y )
{ return ( x + y ) ;
}
main( )
{ int a=1, b=2, c ;
c=2*qian1(a, b);
printf("c = %d\n", c);
}