C 语言实例 "stdio.h"intArrayCopy(char*ori,char*cop,charLength){charloop;for(loop=0;loop<Length;loop++){*cop++=*ori++;}return0;}intmain(){charoriginal[10]={1,2,3,4,5,6,7,8,9,0};char*copiedOne=original;charcopiedTwo[10];charloop;charLength;Length=sizeof(original);printf("元...
CopyStringPtr(char *dest, const char *source) { while (*source != '\0') { *dest = *source; ++dest, ++source; } *dest = '\0'; } // 简易版字符串拷贝 void CopyStringPtrBase(char *dest, const char *source) { while (*dest++ = *source++); } int main(int argc, char* argv...
#import <Foundation/Foundation.h> @interface Test : NSObject { } @property (nonatomic, copy) NSMutableArray* array; @end @implementation Test @end int main(int argc, const char* argv[]) { @autoreleasepool { NSMutableArray* array = [[NSMutableArray alloc] init]; Test* test = [[Test ...
//copy返回不可变对象,mutablecopy返回可变对象 NSArray *array1 = [NSArray arrayWithObjects:@"a",@"b",@"c",nil]; NSArray *arrayCopy1 = [array1 copy]; //arrayCopy1是和array同一个NSArray对象(指向相同的对象),包括array里面的元素也是指向相同的指针 NSLog(@"array1 retain count: %d",[array1...
Copies the C string pointed by source into the array pointed by destination, including the terminating null character (and stopping at that point) 将源头指向的C字符串赋值到目的指针指向的数组中,包括终止空字符(并且在该位置停止) 1.返回类型是目的地字符串的地址char*,参数分别是不可改变的指向源头字符...
h> int main(int argc, char* argv[]) { char Array[] = "hello lyshark"; char tmp[100]; // 学习strcpy函数的使用方式 if (strcpy(tmp, Array) == NULL) printf("从Array拷贝到tmp失败\n"); else printf("拷贝后打印: %s\n", tmp); // 清空tmp数组的两种方式 for (unsigned int x = 0...
#includeint main(int argc, char* argv[]) { char Array[] = "\0hello\nlyshark"; char Str[] = { 'h', 'e', 'l', 'l', 'o' }; int array_len = strlen(Array); printf("字符串的有效长度:%d\n", array_len); int str_len = strlen(Str); ...
include"string.h"include"stdio.h"intmain(void){ inti,j;inta[2][3]={{1,2,3},{4,5,6}};intb[2][3];memcpy(&b[0][0],&a[0][0],24);printf("%d",b[1][0]);}
文件读取操作的代码, 创建一个文件对象, 然后读区copy.cpp文件,通过putchar输出到控制台: #include <stdio.h> int main () { FILE *f; int c; f = fopen("copy.cpp","r"); if(f == NULL) { printf("error\n"); }else{ while( (c=fgetc(f) )!=EOF ) { ...
mstr = 'Hello world'buf = ctypes.create_string_buffer(mstr.encode('ascii')) # <ctypes.c_char_Array_12 at 0x8b6bc48> 长度为12的c_char数组ctypes.string_at( byref(buf)) # b'Hello world' 也可以单纯用来作为一个缓冲区 mytype = c_intpyarray = [1,2,3,4,5,6,7,8,9,10]carray ...