Question

How to use fprintf_s to write formatted data to a stream in C

Answer 1

#include <stdio.h>
#include <process.h>

int main(void)
{
	int n = 123;
	double pi = 3.14;
	char str[] = "c programming";
	char ch = 'Z';

	FILE* fp;

	fopen_s(&fp, "d:\\data.out", "w");
	fprintf_s(fp, "%s\n", str);
	fprintf_s(fp, "%c\n", ch);
	fprintf_s(fp, "%d\n", n);
	fprintf_s(fp, "%f\n", pi);
	
	fclose(fp);
	
	system("type d:\\data.out"); // print the file content

	return 0;
}




/*
run:

c programming
Z
123
3.140000

*/

 

 

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