c读写txt文件示例

#include
#include
int main()
{
char s[20];
int i;
//下面是写数据 
errno_t err;
FILE *fpWrite;
err= fopen_s(&fpWrite,"data.txt", "w");
if (fpWrite == NULL)
{
return 0;
}
for (i = 0; i < 2; i++)
{
gets_s(s, 20);
printf("%s", s);
fprintf(fpWrite, "%s ", s);
//fgets(s[i],20,stdin);
}
fclose(fpWrite);
//下面是读数据  
char a[10][20] = { 0 };
FILE *fpRead;
errno_t err1;
err1 = fopen_s(&fpRead, "data.txt", "r");
printf("test 1\n");
if (fpRead == NULL)
{
return 0;
}
printf("test 2\n");
for (int i = 0; i<5; i++)
{
//fgets(a[i], 20, fpRead);
fscanf_s(fpRead, "%s", a[i],20);
printf("%s\n", a[i]);
printf("test 3\n");
}
fclose(fpRead);
getchar();
}