STL的C++标准程序库中的string类,使用时不必担心内存是否充足、字符串长度等问题,并且C++中的string类作为一个类,其中集成的操作函数(方法)足以完成多数情况下的程序需求,比如说string对象可以用"="进行赋值,使用"=="进行等值比较,使用"+"进行串联。 如果要使用C++的string类必须包含头文件,并引入命名空间: 1 #
字符串字面量(String Literals) 运算符(Operators) 分隔符(Separators) C 程序的基本结构 这是一个简单的 C 语言程序,可以输出 "Hello, World!": 实例 #include <stdio.h> intmain(){ printf("Hello, World!\n"); return0; } 以上代码组成结构如下: ...
h> #include <string.h> int main() { const char *str1 = "apple"; const char *str2 = "banana"; int result = strcmp(str1, str2); if (result < 0) { printf("str1 is less than str2\n"); } else if (result > 0) { printf("str1 is greater than str2\n"); } else { ...
printf("string before strnset:%s\n",string); strnset(string,letter,10); printf("string after strnset: %s\n",string); return 0; } 输出: /*** string beforestrnset: aaaaaaaaaaaaaaaaaaaaaaa string afterstrnset: xxxxxxxxxxaaaaaaaaaaaaa ***/ @函数名称: strset 函数原型: char *strset(char ...
#include<string.h> intmain(void){ char*str1="www.dotcpp.com"; char*str2="WWW.DOTCPP.COM"; intp=strnicmp(str2,str1,3); if(p>0){ printf("str2 is greater than str1\n"); }elseif(p<0){ printf("str2 is less than str1\n"); ...
#include <string.h> #include <stdio.h> int main(void) { char *buf1 = "BBBccc", *buf2 = "bbbccc"; int ptr; ptr = strnicmp(buf2, buf1, 3); if (ptr > 0) printf("buffer 2 is greater than buffer 1\n"); if (ptr < 0) printf("buffer 2 is less than buffer 1\n"); ...
#include <string.h> #include <alloc.h> int main() char *dup_str, *string="abcde"; dup_str=strdup(string); printf("%s", dup_str); free(dup_str); return 0; @函数名称: strcpy 函数原型: char* strcpy(char* str1,char* str2); ...
is less than any other character (1-255).**Entry:* const char * src - string for left...
#include <stdio.h> #include <string.h> int main() { char str1[] = "apple"; char str2[] = "banana"; int result = strcmp(str1, str2); if (result < 0) { printf("'%s' is less than '%s'\n", str1, str2); } else if (result > 0) { printf("'%s' is greater than ...
数字比较：if (variable LESS number)：LESS 小于if (string LESS number)if (variable GREATER number)：GREATER 大于if (string GREATER number)if (variable EQUAL number)：EQUAL 等于if (string EQUAL number)字母表顺序比较：if (variable STRLESS string)if (string STRLESS string)if (variable STRGREATER ...