ovl1.c

这是《Keil Cx51 V7.0单片机高级语言编程与uVision2应用实践》教材各章中列出的全部程序例子。

bit indirectfunc1(void) {
    unsigned char n1,n2;
    return(n1<n2);
 }
 bit indirectfunc2(void) {
    unsigned char a1,a2;
    return((a1=0x41)<(a2-0x41));
 }
 exec(bit (*fct)(void)) {
    unsigned int i,j,k;
    for(i=0;i<10;i++)
       if(*fct) i=10;
 }

    unsigned char SWITCH;

 main() {
    if(SWITCH) exec(indirectfunc1);
    else       exec(indirectfunc2);
 }