#C #string_operation

string_C.c

/*
 ============================================================================
 Name        : string_C.c
 Author      : octoberwu
 Version     :
 Copyright   : Your copyright notice
 Description : Hello World in C, Ansi-style
 ============================================================================
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int main(int argc, char* argv[]) {
	//puts("!!!Hello World!!!"); /* prints !!!Hello World!!! */
	//return EXIT_SUCCESS;

	strSPNex();

    return 0;
}

void strSPNex(){
	char *str = "First test string";
	char *str1 = "1t7543h90";
	char *reg1 = "test";
	char *reg2 = "i1";
	char *reg3 = "0123456789";
	size_t n;

	printf("str  : %s\n",str);
	printf("reg1 : %s\n",reg1);
	printf("reg2 : %s\n",reg2);

	n = strspn(str,reg1);
	printf("First occurrence of char from reg1 on\n\t\
			position %d\n",n);

	n = strcspn(str,reg2);
	printf("First occurrence of not char from reg2 on\n\t\
			position %d\n",n);

	n = strspn(str1, reg3);
	printf("xxxFirst occurrence of not char from str1 on\n\t\
			position %d\n",n);
}