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int maxValue£¨int a£¬int b£©
{
return a > b ? a : b;
}
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int maxValue£¨int a£¬int b£©
int £¨*p£©£¨int£¬int£©= NULL
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p = maxValue£¨º¯ÊýÖ¸ÕëµÄʹÓ㺸³值º¯ÊýÃû£©
int m = p£¨3£¬5£©£¨Ö¸Õë¿Éµ±º¯ÊýÓã©
Á·Ï°£º¶¨ÒåÁ½¸öº¯Êý£¬Ò»¸öÇó×î´ó值£¬Ò»¸öÇóºÍ£¬Óû§´Ó¿ØÖÆ̨ÊäÈëÁ½¸öÕûÊý£¬ÔÚ´Ó¿ØÖÆ̨ÊäÈëmax»òsum·Ö±ðÇó3ºÍ5µÄ×î´ó值»òºÍ£¬£¨Ìáʾ£º¶¨ÒåÒ»¸öº¯ÊýÖ¸Õ룬¸ù¾ÝÊäÈëÄÚÈÝÖ¸Ïò²»Í¬µÄº¯Êý£¬×îºóÒ»´Îµ÷ÓÃÍê³É£©
int maxValue ( int a, int b ) / / Çó×î´ó值µÄº¯Êý
{
return a > b ? a : b;
}
int sumValue ( int a, int b ) / / ÇóºÍµÄº¯Êý
{
return a + b;
}
int main( int argc, const char *argv[])
{
void (*p) (int , int) = NULL; / / ¶¨ÒåÒ»¸öÖ¸Õë±äÁ¿
int a , b; / / ¶¨ÒåÁ½¸öÐèÒªÓõÄÕûÐͱäÁ¿
printf(" ÇëÊäÈëÁ½¸öÕûÊý£º "); / / ÈÃÓû§ÊäÈëÁ½¸öÕûÊý
scanf(" %d%d ",&a,&b); / / ±ê×¼µÄÊäÈ뺯Êý
printf(" ÇëÊäÈësum»òÕßmax£º "); / / ÈÃÓû§ÊäÈësum»òÕßmax
char *name = malloc(sizeof(char) * 10); / / ÉêÇëcharÀàÐ͵ijËÒÔ10µÄÄÚ´æ¿Õ¼ä
scanf(" %s ", name);
/ / ÅжÏÓû§ÊäÈëµÄÊÇsum»¹ÊÇmax
if (strcmp(name, " sum ") == 0){
p = sumValue;
}else if (strcmp(name, " max ") == 0){
p = maxValue;
}else {
printf(" ÊäÈë´íÎó£¬Ê§°Ü ");
}
free (name); / / ÊÍ·ÅÄڴ棬һ¶¨²»ÄÜÍü
int result = p(a, b); / / ¶¨Òåresult½ÓÊÕ½á¹û
printf(" %d ", result); / / Êä³ö½á¹û
}
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º¯ÊýÖ¸Õë×ö²ÎÊý
int getValue(int a, int b, int (*p)(int , int));
getValue: º¯ÊýÃû
int (*p)(int ,int): º¯ÊýÖ¸Õë×ögetValueº¯ÊýµÄ²ÎÊý
int value = getValue(3, 5, maxValue);£¨º¯Êýµ÷ÓãºgetValueº¯ÊýÖ´Ðйý³ÌÖÐÔÙµ÷Ó㨻ص÷£©maxValue£©
ÈçͼËùʾ£º
Á·Ï°£ºÐ´Ò»º¯Êý²éÕҳɼ¨ÔÚ90·ÖÒÔÉϵÄѧÉú£¬ÊÇÓûص÷º¯ÊýÔÚÐÕÃûºóÃæ¼Ó¡°¸ß¸»Ë§¡±<†·Ÿ"http://www.Bkjia.com/kf/ware/vc/" target="_blank" class="keylink">vcD4KPHA+dHlwZWRlZiAgc3RydWN0IHsgICAgICAgICAgIC8gLyAgtqjS5dK7uPa94bm5zOU8L3A+CjxwPmNoYXIgbmFtZVsyMF07PC9wPgo8cD5pbnQgIGFnZTs8L3A+CjxwPmZsb2F0ICBzY29yZTs8L3A+CjxwPn0gU3R1ZGVudDs8L3A+CjxwPjwvcD4KPHA+dm9pZCAgcHJpbnRmU3R1ZGVudChTdHVkZW50ICAqc3R1LCBpbnQgIGNvdW50KaO7PC9wPgo8cD52b2lkICBwcmludGZTdHVkZW50KFN0dWRlbnQgICpzdHUsIGludCAgY291bnQpICAgLyAvICDJ+cP3sqKx4NC00ru49rTy06G94bm5zOXK/dfptcS6r8r9PC9wPgo8cD57PC9wPgo8cD5mb3IoaW50ICBpID0gMDsgaSA8IGNvdW50IDsgaSYjNDM7JiM0MzspezwvcD4KPHA+cHJpbnRmKA=="%s %d %.2f", (stu + i) ->name, (stu + i) ->age, (stu + i) ->score);
}
}
/ / ÉùÃ÷²¢±àд²éÕÒ90·ÖÒÔÉϵÄѧÉú²¢ÔÚÐÕÃûºóÃæ¼Ó¡°¸ß¸»Ë§¡±
void changeStudent(Student *stu, int count, void (*p)(Student *));
void changeStudent(Student *stu, int count, void(*p)(Student *))
{
for (int i = 0; i < count ; i++){
if ((stu + i) ->score >= 90){
p(stu + i);
}
}
}
void changeName(Student *stu);
void changeName(Student *stu)
{
strcat (stu ->name, " ¸ß¸»Ë§ ");
}
int main(int argc, const char*argv[]){
Student student = { / / ¶¨Òå½á¹¹Ìå±äÁ¿
{" ·½ÊÀÓñ ", 26, 92},
{" Áîºü³å ", 30, 89},
{" ΤС±¦ ", 27, 99}£¬
{" »¨ÏÉ×Ó ", 20, 80}£¬
{" ´ó½ÌÖ÷ ", 24, 80}
};
int count = sizeof(student) / sizeof(Student); / / Çó½á¹¹ÌåÊý×éµÄ³¤¶È
printfStudent(stuent, count); / / ´òӡû²éÕÒÇ°µÄ½á¹¹ÌåÊý×é
changeStudent(student, count, changeName); / / ÅжÏÊÇ·ñ·ûºÏÌõ¼þ90·ÖÒÔÉϵĽøÐиıä
printfStudent(student, count) / / ´òÓ¡²éÕÒºóµÄ½á¹¹ÌåÊý×é
}
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void sortArray(int *array, int count)
{
for (int i = 0; i < count - 1; i++){
for (int j = 0; j < count - 1 - i; j++){
if (Ìõ¼þ£¨ÐèÇó£©) {
½»»»
}
}
}
}
¾ö¶¨ÅÅÐò·½Ê½µÄÖØÒªÓï¾ä·â×°³Éº¯ÊýÔڴ˻ص÷
int Êý×鶯̬ÅÅÐò
typedef BOOL(* PFUNC)(int , int); / / Ϊº¯ÊýÖ¸ÕëÀàÐÍÆðÃûΪPFUNC
void sortArray(int *array, int count , PFUNC p); / / ¶¯Ì¬º¯ÊýÅÅÐòÉùÃ÷
ʾÀý£º
/ / 1£º´´½¨Ò»¸ö½á¹¹Ìå
typedef struct {
char name[20];
int age;
float score;
} Student;
/ / 3£º´òӡѧÉú½á¹¹ÌåÊý×éµÄº¯Êý
void printfStudent(Student *stu, int count);
void printfStudent(Student *stu, int count)
{
for (int i = 0; i < count; i++){
printf("%s %d %.2f",(stu + i) ->name, (stu + i) ->age, (stu + i) ->score);
}
printf("\n");
}
/ / 5£ºÐ´Ò»¸öº¯Êý¸ù¾Ý·ÖÊý´ÓСµ½´óÅÅÐò
void paiXuStudent(Student *stu, int count, BOOL (*PFUNC)(Student *stu1, Student *stu2));
void paiXuStudent(Student *stu, int count, BOOL (*PFUNC)(Student *stu1, Student *stu2))
{
for (int i = 0; i < count - 1; i++){
for (int j = 0; j < count - 1 - i; j++){
if (PFUNC((stu + j), (stu + j + 1))){
Student temp;
temp = *(stu + j);
*(stu + j) = *(stu + j + 1);
*(stu + j + 1) = temp;
}
}
}
}
/ / 6£º¶¨ÒåÒ»¸ö°´·ÖÊý±È½Ï´óСµÄº¯Êý
BOOL biJiaoScore(Student *stu1, Student *stu2);
BOOL biJiaoScore(Student *stu1, Student *stu2)
{
return stu1 ->score > stuff ->score;
}
/ / ¶¨ÒåÒ»¸ö°´ÄêÁäÅÅÐòµÄº¯Êý
BOOL compareAge(Student *stu1, Student *stu2);
BOOL compareAge(Student *stu1, Student *stu2)
{
return stu1 ->age > stuff ->age
}
int main(int argc, char * argv[]){
/ / 2£º´´½¨Ñ§Éú½á¹¹ÌåÊý×é
Student *student = {
{"Ë÷¡", 22, 93},
{"Ï㼪ʿ", 21, 97},
{"Ȯҹ²æ", 20, 80},
{"··É", 19, 70}
};
/ / 4£ºÅÅÐòÇ°µ÷ÓôòÓ¡º¯Êý´òÓ¡½á¹¹ÌåÊý×é
int count = sizeof(student) / sizeof(Student);
printfStudent(student, count);
/ / 7£ºµ÷Óú¯Êý
paiXuStudent(student, count , biJiaoScore);
/ / paiXuStudent(student, count , compareAge);°´ÄêÁäÅÅÐò£¨Ö»Ðè´«È뺯Êý¾Í¿É£©
/ / 8£º´òÓ¡ÅÅÐòºóµÄ½á¹¹ÌåÊý×é
printfStudent(student, count);
}
