本文整理汇总了C++中car函数的典型用法代码示例。如果您正苦于以下问题：C++ car函数的具体用法？C++ car怎么用？C++ car使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。
在下文中一共展示了car函数的20个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的C++代码示例。
示例1: error
object *bs_eval(object *exp, object *env)
{
tailcall:
if (is_empty_list(exp)) {
error("unable to evaluate empty list");
} else if (is_self_evaluating(exp)) {
return exp;
} else if (is_variable(exp)) {
return lookup_variable_value(exp, env);
} else if (is_quoted(exp)) {
return quoted_expression(exp);
} else if (is_assignment(exp)) {
return eval_assignment(exp, env);
} else if (is_definition(exp)) {
return eval_definition(exp, env);
} else if (is_if(exp)) {
if (is_true(bs_eval(if_predicate(exp), env))) {
exp = if_consequent(exp);
} else {
exp = if_alternate(exp);
}
goto tailcall;
} else if (is_lambda(exp)) {
return make_compound_proc(lambda_parameters(exp),
lambda_body(exp),
env);
} else if (is_begin(exp)) {
exp = begin_actions(exp);
if (is_empty_list(exp)) {
error("empty begin block");
}
while (!is_empty_list(cdr(exp))) {
bs_eval(car(exp), env);
exp = cdr(exp);
}
exp = car(exp);
goto tailcall;
} else if (is_cond(exp)) {
exp = cond_to_if(exp);
goto tailcall;
} else if (is_let(exp)) {
exp = let_to_application(exp);
goto tailcall;
} else if (is_and(exp)) {
exp = and_tests(exp);
if (is_empty_list(exp)) {
return get_boolean(1);
}
object *result;
while (!is_empty_list(cdr(exp))) {
result = bs_eval(car(exp), env);
if (is_false(result)) {
return result;
}
exp = cdr(exp);
}
exp = car(exp);
goto tailcall;
} else if (is_or(exp)) {
exp = or_tests(exp);
if (is_empty_list(exp)) {
return get_boolean(0);
}
object *result;
while (!is_empty_list(cdr(exp))) {
result = bs_eval(car(exp), env);
if (is_true(result)) {
return result;
}
exp = cdr(exp);
}
exp = car(exp);
goto tailcall;
} else if (is_application(exp)) {
object *procedure = bs_eval(application_operator(exp), env);
object *parameters = eval_parameters(application_operands(exp), env);
// handle eval specially for tailcall requirement.
if (is_primitive_proc(procedure) &&
procedure->value.primitive_proc == eval_proc) {
exp = eval_expression(parameters);
env = eval_environment(parameters);
goto tailcall;
}
// handle apply specially for tailcall requirement.
if (is_primitive_proc(procedure) &&
procedure->value.primitive_proc == apply_proc) {
procedure = apply_operator(parameters);
parameters = apply_operands(parameters);
}
if (is_primitive_proc(procedure)) {
return (procedure->value.primitive_proc)(parameters);
} else if (is_compound_proc(procedure)) {
env = extend_environment(
procedure->value.compound_proc.parameters,
parameters,
procedure->value.compound_proc.env);
exp = make_begin(procedure->value.compound_proc.body);
//.........这里部分代码省略.........
开发者ID:ingramj，项目名称:bs，代码行数:101，代码来源:eval.c
示例2: assignmentValue
void assignmentValue(Register result, Register exp)
{
cdr(result, exp);
cdr(result, result);
car(result, result);
}
开发者ID:jarvinet，项目名称:scheme，代码行数:6，代码来源:syntax.c
示例3: main
void main()
{
int gd=VGA,gm=VGAHI,errorcode,area,i,j,play=1,rndplay,rac,r,ch,chh,n=1,speed=151,sp=1,si=1,carx,cary,gear=0,aspeed,booster=100,drumx,drumy,drumv,drumx1,drumy1,spp,coin=200;
int life_=10;
int fire=20;
char info[4];
int soun;
char *buff;
char *fir;
char *boost;
int mouse=23;
int x,y,button;
char *tyre1;
float feul=100;
char *car1buf;
char *pcar4buf;
char *fcar5buf;
int recsize;
FILE *fp;
struct record
{
int coins;
int lifes;
float feuls;
int speeds;
int boosters;
int gear_;
int fire_;
}rec;
recsize=sizeof(rec);
initgraph(&gd,&gm,"c:\bagger");
errorcode = graphresult();
if (errorcode != grOk)
{
printf("Graphics error: %s\n", grapherrormsg(errorcode));
printf("Press any key to halt:");
getch();
exit(1);
}
fp=fopen("c:\\rruunn.r4l","r");
fread(&rec,recsize,1,fp);
coin=rec.coins;
feul=rec.feuls;
speed=rec.speeds;
booster=rec.boosters;
gear=rec.gear_;
fire=rec.fire_;
life_=rec.lifes;
fclose(fp);
remove("c:\\rruunn.r4l");
if(coin>0 && feul>0 && life_>0)
{
//geting car's image*****************************************
setcolor(RED);
settextstyle(8,1,4);
outtextxy(100,100+60,"You have : ");
car(125,75);
area=imagesize(85,15,165,405);
buff=malloc(area);
getimage(85,15,165,405,buff);
putimage(85,15,buff,XOR_PUT);
setcolor(8);
setfillstyle(1,8);
bar((getmaxx()/2)-130,0,(getmaxx()/2)+130,getmaxy());
roadstru();
basicstructure1();
sean1();
gears(5);
speedgrp(151-speed);
feulgrp(100);
coingrp(200);
boostergrp(100);
firee(20);
lifee(10);
car(250,400);
setcolor(WHITE);
setfillstyle(1,WHITE);
for(i=-2000;i<+25000;i+=100)
bar((getmaxx()/2)-5,i,(getmaxx()/2)+5,i+80);
delay(1000);
setcolor(getbkcolor());
setfillstyle(1,getbkcolor());
for(i=1;i<320;i++)
{
//.........这里部分代码省略.........
开发者ID:rishabh-tripathi，项目名称:Run4Life-Dos-Game，代码行数:101，代码来源:R4L01SC.C
示例4: firstOperand
void firstOperand(Register result, Register ops)
{
car(result, ops);
}
开发者ID:jarvinet，项目名称:scheme，代码行数:4，代码来源:syntax.c
示例5: procedureBody
void procedureBody(Register result, Register procedure)
{
cdr(result, procedure);
cdr(result, result);
car(result, result);
}
开发者ID:jarvinet，项目名称:scheme，代码行数:6，代码来源:syntax.c
示例6: ifPredicate
void ifPredicate(Register result, Register exp)
{
cdr(result, exp);
car(result, result);
}
开发者ID:jarvinet，项目名称:scheme，代码行数:5，代码来源:syntax.c
示例7: firstExp
void firstExp(Register result, Register exp)
{
car(result, exp);
}
开发者ID:jarvinet，项目名称:scheme，代码行数:4，代码来源:syntax.c
示例8: doAs
// (as 'any1 . any2) -> any2 | NIL
any doAs(any x) {
x = cdr(x);
if (isNil(EVAL(car(x))))
return Nil;
return cdr(x);
}
开发者ID:evanrmurphy，项目名称:PicoLisp，代码行数:7，代码来源:flow.c
示例9: doLit
// (lit 'any) -> any
any doLit(any x) {
x = cadr(x);
if (isNum(x = EVAL(x)) || isNil(x) || x == T || isCell(x) && isNum(car(x)))
return x;
return cons(Quote, x);
}
开发者ID:evanrmurphy，项目名称:PicoLisp，代码行数:7，代码来源:flow.c
示例10: evMethod
/* Evaluate method invocation */
static any evMethod(any o, any expr, any x) {
any y = car(expr);
any cls = TheCls, key = TheKey;
struct { // bindFrame
struct bindFrame *link;
int i, cnt;
struct {any sym; any val;} bnd[length(y)+3];
} f;
f.link = Env.bind, Env.bind = (bindFrame*)&f;
f.i = sizeof(f.bnd) / (2*sizeof(any)) - 2;
f.cnt = 1, f.bnd[0].sym = At, f.bnd[0].val = val(At);
while (isCell(y)) {
f.bnd[f.cnt].sym = car(y);
f.bnd[f.cnt].val = EVAL(car(x));
++f.cnt, x = cdr(x), y = cdr(y);
}
if (isNil(y)) {
while (--f.i > 0) {
x = val(f.bnd[f.i].sym);
val(f.bnd[f.i].sym) = f.bnd[f.i].val;
f.bnd[f.i].val = x;
}
f.bnd[f.cnt].sym = This, f.bnd[f.cnt++].val = val(This), val(This) = o;
y = cls, cls = Env.cls; Env.cls = y;
y = key, key = Env.key; Env.key = y;
x = prog(cdr(expr));
}
else if (y != At) {
f.bnd[f.cnt].sym = y, f.bnd[f.cnt++].val = val(y), val(y) = x;
while (--f.i > 0) {
x = val(f.bnd[f.i].sym);
val(f.bnd[f.i].sym) = f.bnd[f.i].val;
f.bnd[f.i].val = x;
}
f.bnd[f.cnt].sym = This, f.bnd[f.cnt++].val = val(This), val(This) = o;
y = cls, cls = Env.cls; Env.cls = y;
y = key, key = Env.key; Env.key = y;
x = prog(cdr(expr));
}
else {
int n, cnt;
cell *arg;
cell c[n = cnt = length(x)];
while (--n >= 0)
Push(c[n], EVAL(car(x))), x = cdr(x);
while (--f.i > 0) {
x = val(f.bnd[f.i].sym);
val(f.bnd[f.i].sym) = f.bnd[f.i].val;
f.bnd[f.i].val = x;
}
n = Env.next, Env.next = cnt;
arg = Env.arg, Env.arg = c;
f.bnd[f.cnt].sym = This, f.bnd[f.cnt++].val = val(This), val(This) = o;
y = cls, cls = Env.cls; Env.cls = y;
y = key, key = Env.key; Env.key = y;
x = prog(cdr(expr));
if (cnt)
drop(c[cnt-1]);
Env.arg = arg, Env.next = n;
}
while (--f.cnt >= 0)
val(f.bnd[f.cnt].sym) = f.bnd[f.cnt].val;
Env.bind = f.link;
Env.cls = cls, Env.key = key;
return x;
}
开发者ID:evanrmurphy，项目名称:PicoLisp，代码行数:69，代码来源:flow.c
示例11: doBox
// (box 'any) -> sym
any doBox(any x) {
x = cdr(x);
return consSym(EVAL(car(x)), Nil);
}
开发者ID:evanrmurphy，项目名称:PicoLisp，代码行数:5，代码来源:flow.c
示例12: doFor
// (for sym 'num ['any | (NIL 'any . prg) | (T 'any . prg) ..]) -> any
// (for sym|(sym2 . sym) 'lst ['any | (NIL 'any . prg) | (T 'any . prg) ..]) -> any
// (for (sym|(sym2 . sym) 'any1 'any2 [. prg]) ['any | (NIL 'any . prg) | (T 'any . prg) ..]) -> any
any doFor(any x) {
any y, body, cond, a;
cell c1;
struct { // bindFrame
struct bindFrame *link;
int i, cnt;
struct {any sym; any val;} bnd[2];
} f;
f.link = Env.bind, Env.bind = (bindFrame*)&f;
f.i = 0;
if (!isCell(y = car(x = cdr(x))) || !isCell(cdr(y))) {
if (!isCell(y)) {
f.cnt = 1;
f.bnd[0].sym = y;
f.bnd[0].val = val(y);
}
else {
f.cnt = 2;
f.bnd[0].sym = cdr(y);
f.bnd[0].val = val(cdr(y));
f.bnd[1].sym = car(y);
f.bnd[1].val = val(car(y));
val(f.bnd[1].sym) = Zero;
}
y = Nil;
x = cdr(x), Push(c1, EVAL(car(x)));
if (isNum(data(c1)))
val(f.bnd[0].sym) = Zero;
body = x = cdr(x);
for (;;) {
if (isNum(data(c1))) {
val(f.bnd[0].sym) = bigCopy(val(f.bnd[0].sym));
digAdd(val(f.bnd[0].sym), 2);
if (bigCompare(val(f.bnd[0].sym), data(c1)) > 0)
break;
}
else {
if (!isCell(data(c1)))
break;
val(f.bnd[0].sym) = car(data(c1));
if (!isCell(data(c1) = cdr(data(c1))))
data(c1) = Nil;
}
if (f.cnt == 2) {
val(f.bnd[1].sym) = bigCopy(val(f.bnd[1].sym));
digAdd(val(f.bnd[1].sym), 2);
}
do {
if (!isNum(y = car(x))) {
if (isSym(y))
y = val(y);
else if (isNil(car(y))) {
y = cdr(y);
if (isNil(a = EVAL(car(y)))) {
y = prog(cdr(y));
goto for1;
}
val(At) = a;
y = Nil;
}
else if (car(y) == T) {
y = cdr(y);
if (!isNil(a = EVAL(car(y)))) {
val(At) = a;
y = prog(cdr(y));
goto for1;
}
y = Nil;
}
else
y = evList(y);
}
} while (isCell(x = cdr(x)));
x = body;
}
for1:
drop(c1);
if (f.cnt == 2)
val(f.bnd[1].sym) = f.bnd[1].val;
val(f.bnd[0].sym) = f.bnd[0].val;
Env.bind = f.link;
return y;
}
if (!isCell(car(y))) {
f.cnt = 1;
f.bnd[0].sym = car(y);
f.bnd[0].val = val(car(y));
}
else {
f.cnt = 2;
f.bnd[0].sym = cdar(y);
f.bnd[0].val = val(cdar(y));
f.bnd[1].sym = caar(y);
f.bnd[1].val = val(caar(y));
val(f.bnd[1].sym) = Zero;
}
//.........这里部分代码省略.........
开发者ID:evanrmurphy，项目名称:PicoLisp，代码行数:101，代码来源:flow.c
示例13: if
sExpression *eval(sExpression *exp, sEnvironment *env){
/* ------------------atom-----------------------*/
/* 1, 10, false, null, "abc" */
if(isSelfEval(exp))
{
return exp;
}
/* a symbol */
else if(isVariable(exp, env))
{
return lookupVariable(toSymb(exp), env);
}
/* ------------------list-----------------------*/
/* (quote blur blur) */
else if(isQuoted(exp))
{
return textOfQuoted(exp);
}
/* (set! name value) */
else if(isAssignment(exp))
{
return evalAssignment(exp, env);
}
/* (define name value) */
else if(isDefinition(exp))
{
return evalDefine(exp, env);
}
/* (define-syntax name ...) */
else if(isDefinitionSyntax(exp))
{
return evalDefineSyntax(exp, env);
}
/* (if blur blur blur) */
else if(isIf(exp))
{
return evalIf(toList(exp), env);
}
/* (lambda (args) (body)) */
else if(isLambdaConst(exp))
{
sList *body;
sList *param = toList( cadr(toList(exp)));
sExpression *temp = cdr(toList( cdr(toList(exp))));
if(isList(temp)){
body = toList(temp);
}else{
body = toList(cons(temp, &sNull));
}
return newLambda(param, body, env);
}
/* (syntax blur blur) syntax rule */
else if(isSymbol(car(toList(exp))) && isSyntaxRule(eval(car(toList(exp)), env)))
{
sExpression *exp2 = evalSyntaxRule(toSyntax(eval(car(toList(exp)), env)), exp);
return eval(exp2, env);
}
/* the other list (x . y) */
else if(isApplication(exp))
{
if(LAZY_EVAL){
sExpression *proexp = actualValue(operator(toList(exp)), env);
if(isLambdaType(proexp) || isPrimitiveProc(proexp)){
sExpression *operand = operands(toList(exp));
return applyLazly(proexp, operand, env);
}
}else{
sExpression *proexp = eval(operator(toList(exp)), env);
if(isLambdaType(proexp) || isPrimitiveProc(proexp)){
sExpression *operand = operands(toList(exp));
sExpression *arguments = listOfValues(operand, env);
return apply(proexp, arguments, env);
}
}
}
return &sError;
}
开发者ID:tkmr，项目名称:tonburi-scm，代码行数:77，代码来源:eval.c
示例14: car
static sExpression *firstExp(sList *exps){
return car(exps);
}
开发者ID:tkmr，项目名称:tonburi-scm，代码行数:3，代码来源:eval.c
示例15: symeListSetExtension
void
symeListSetExtension(SymeList symes, Syme syme)
{
for (; symes; symes = cdr(symes))
symeSetExtension(car(symes), syme);
}
开发者ID:pdo，项目名称:aldor，代码行数:6，代码来源:syme.c
示例16: doEval
// (eval 'any ['cnt ['lst]]) -> any
any doEval(any x) {
any y;
cell c1;
bindFrame *p;
x = cdr(x), Push(c1, EVAL(car(x))), x = cdr(x);
if (!isNum(y = EVAL(car(x))) || !(p = Env.bind))
data(c1) = EVAL(data(c1));
else {
int cnt, n, i, j;
struct { // bindFrame
struct bindFrame *link;
int i, cnt;
struct {any sym; any val;} bnd[length(x)];
} f;
x = cdr(x), x = EVAL(car(x));
j = cnt = (int)unBox(y);
n = f.i = f.cnt = 0;
do {
++n;
if ((i = p->i) <= 0 && (p->i -= cnt, i == 0)) {
for (i = 0; i < p->cnt; ++i) {
y = val(p->bnd[i].sym);
val(p->bnd[i].sym) = p->bnd[i].val;
p->bnd[i].val = y;
}
if (p->cnt && p->bnd[0].sym == At && !--j)
break;
}
} while (p = p->link);
while (isCell(x)) {
for (p = Env.bind, j = n; ; p = p->link) {
if (p->i < 0)
for (i = 0; i < p->cnt; ++i) {
if (p->bnd[i].sym == car(x)) {
f.bnd[f.cnt].val = val(f.bnd[f.cnt].sym = car(x));
val(car(x)) = p->bnd[i].val;
++f.cnt;
goto next;
}
}
if (!--j)
break;
}
next: x = cdr(x);
}
f.link = Env.bind, Env.bind = (bindFrame*)&f;
data(c1) = EVAL(data(c1));
while (--f.cnt >= 0)
val(f.bnd[f.cnt].sym) = f.bnd[f.cnt].val;
Env.bind = f.link;
do {
for (p = Env.bind, i = n; --i; p = p->link);
if (p->i < 0 && (p->i += cnt) == 0)
for (i = p->cnt; --i >= 0;) {
y = val(p->bnd[i].sym);
val(p->bnd[i].sym) = p->bnd[i].val;
p->bnd[i].val = y;
}
} while (--n);
}
return Pop(c1);
}
开发者ID:evanrmurphy，项目名称:PicoLisp，代码行数:65，代码来源:flow.c
示例17: lambdaParameters
void lambdaParameters(Register result, Register exp)
{
cdr(result, exp);
car(result, result);
}
开发者ID:jarvinet，项目名称:scheme，代码行数:5，代码来源:syntax.c
示例18: doXor
// (xor 'any 'any) -> flg
any doXor(any x) {
bool f;
x = cdr(x), f = isNil(EVAL(car(x))), x = cdr(x);
return f ^ isNil(EVAL(car(x)))? T : Nil;
}
开发者ID:evanrmurphy，项目名称:PicoLisp，代码行数:7，代码来源:flow.c
示例19: ifConsequent
void ifConsequent(Register result, Register exp)
{
cdr(result, exp);
cdr(result, result);
car(result, result);
}
开发者ID:jarvinet，项目名称:scheme，代码行数:6，代码来源:syntax.c
示例20: doNil
// (nil . prg) -> NIL
any doNil(any x) {
while (isCell(x = cdr(x)))
if (isCell(car(x)))
evList(car(x));
return Nil;
}
开发者ID:evanrmurphy，项目名称:PicoLisp，代码行数:7，代码来源:flow.c
注：本文中的car函数示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。 |
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