学步园

每两个字符截取，再此基础上做一系列的出来

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

int main()
{
    int i;
    char intermediate[3] = {0};
    char ptr[] = "00142A8F606F";

    for (i = 0; i < strlen(ptr); i += 2)
    {
        intermediate[0] = ptr[i];
        intermediate[1] = ptr[i+1];
		intermediate[2] = '\0';


        printf("%s\n", intermediate);
    }

    printf("sizeof(intermediate)=%d\n", sizeof(intermediate));
    printf("strlen(intermediate)=%d\n", strlen(intermediate));
    return 0;
}

读取txt中内容

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

void main()
{

	FILE *fp;

	const int MAXLEN = 1024;

	char str[MAXLEN] = {0};

	if(NULL == (fp = fopen("D:\\input.txt","r")))
	{
		printf("File doesn't open.\n");

		exit(0);
	}
	 
	fscanf(fp,"%s",str);

	printf("the words in the input.txt are: %s\n",str);

}