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

int main(void)
{
    FILE *fp = NULL;
    char name[12] = "tom";
    int age = 12; 
    int ret = 0;

    char readName[12];
    int readAge;

//    scanf("%s",name);    //不能手動輸入字符串，會導致讀取不出來字符
//    scanf("%d",&age);

    #if
 
 0  //字符串寫入文件
    fp = fopen("./file","w");
    if(!fp)
    {
        printf("fopen error!\n");
        return -1;
    }
    //將字符串寫入fp指向文件
    ret = fprintf(fp,"%s : %d\n",name,age);
    if(ret<0) //fprintf返回寫入字符數，發生錯誤，返回一個負值
    {
        printf("fprintf error!\n");
        return -1;    
    }
    #else
 
 
    fp = fopen("./file","r");
    if(!fp)
    {
        printf("fopen error!\n");
        return -1;
    }
    //讀取fp的內容，寫入name,age內
    ret = fscanf(fp,"%s : %d",readName,&readAge);
    if(ret<0) //fprintf返回寫入字符數，發生錯誤，返回一個負值
    {
        printf("scanf error!\n");
        return -1;    
    }

    printf(
 
"fscanf: name=%s,age=%d\n",readName,readAge);
    #endif

    free(fp);

    return 0;
}

fprintf寫入字符串入文件/fread讀取文件內的字符串