#string_operation

findLastof.c

/*
 ============================================================================
 Name        : findLastof.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(void) {

	char *path = "/dev/ttyS2";
	char *pch;
	pch = strstr(path, "ttyS");
	//if(pch != NULL){
		//pch = strchr(pch+1, 'S');
	//}
	//pch = pch + 3;
	int ret;
	pch += strlen("ttyS");
	//printf("this is %s\n", pch);
	//if(isdigit(*pch))
	//	puts("I am digits\n");
	printf("strstr: %s\n", pch);
	ret = atoi(pch);
	printf("The Integer: %d\n", ret);
	puts("!!!Hello World!!!"); /* prints !!!Hello World!!! */
	return EXIT_SUCCESS;
}