I am trying to use the inbuilt qsort function in C to sort a structuretypedef struct abc{ long long int fir; long long int sec; }abc; In the compare function I used the below code so that if the variable "fir" is same between any two elements in the array of structure abc then t...
在 main 函数中,我们定义了两个比较函数 compare_int 和 compare_reverse_int,分别用于升序和降序排序。然后,我们调用 sort 函数来对整型数组进行排序,并打印出结果。函数指针数组 函数指针数组是指一个数组,其中的每个元素都是一个函数指针。这种数组可以用于实现一个分派表,根据输入参数的不同,动态地调用不同...
下面创建了一个sort.dll的动态链接库,它导出了一个名为CompareFunction的类型--typedef int (__stdcall *CompareFunction)(const byte*, const byte*),它就是回调函数的类型。另外,它也导出了两个方法:Bubblesort()和Quicksort(),这两个方法原型相同,但实现了不同的排序算法。 void DLLDIR __stdcall Bubblesor...
int compare (const void * a, const void * b) { return ( *(int*)a - *(int*)b ); } I wrote this function to test:#include <stdio.h> #include <limits.h> int compare (const void * a, const void * b) { return ( *(int*)a - *(int*)b ); } int main(void) { int a...
The standard library function 'strcmp()' can be used to compare two strings. It returns an integer value, with 0 indicating that the strings are identical, negative values implying that the first string is lexically smaller, and positive values showing that the second string is greater. 四、...
compare 可缩写为 cmp configuration 可缩写为 cfg device 可缩写为 dev error 可缩写为 err hexadecimal 可缩写为 hex increment 可缩写为 inc initialize 可缩写为 init maximum 可缩写为 max message 可缩写为 msg minimum 可缩写为 min parameter 可缩写为 para ...
The behavior of this function depends on the LC_COLLATE category of the selected C locale. //依赖LC_COLLATE类 1.strcmp 原型:int strcmp ( const char * str1, const char * str2 ); 功能:Compare two strings //比较两个字符串 返回值:Returns an integral value indicating the relationship between...
The following example shows the usage of bsearch() function.#include <search.h> #include <string.h> #include <stdio.h> int compare( char **arg1, char **arg2 ) { /* Compare all of both strings: */ return _strcmpi( *arg1, *arg2 ); } int main( void ) { char *colors[] = {...
compareNumberFunction(numberArray,5, compareNumber, compareGreater); // 小于被比较数字情况: compareNumberFunction(numberArray,5, compareNumber, compareLess); return0; } 所以,函数回调本质为函数指针作为函数参数,函数调用时传入函数地址,这使我们的代码变得更加灵活,可复用性更强。