Adding an integer to char array for nice output

Question

I am very new to C and am finding that strings in C are giving me quite the headache. I have a program that prints out some data from my struct that holds information on an object. I have an array of these structs and I want to print the data with a nice message. here is the kicker, I am using UDP socket programming and my server handles this information and sends a char array (string) back in which I then print this. Is there an easy way I can achieve this

printf("Economy capacity: %d\n", database[index].ecap);

but instead of printing it, assign this statement to a char array? this does not work

strcpy(output,"Premium capacity: %d\n", database[index].pcap);

I think you are trying to describe sprintf or preferably snprintf — M.M
– M.M, Commented Oct 22, 2014 at 0:37

Gui Rava · Accepted Answer · 2014-10-22 00:37:56Z

1

strcpy is not the function you want to use. You want to use snprintf

char output[256];
snprintf(output,256,"Premium capacity: %d\n", database[index].pcap);

answered Oct 22, 2014 at 0:37

Gui Rava

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John Zwinck · Accepted Answer · 2014-10-22 00:37:27Z

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You want snprintf(). Just like printf() but writes to a char array.

answered Oct 22, 2014 at 0:37

John Zwinck

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1 Comment

user3704079 Over a year ago

This is exactly what I needed. Very first C project coming from java….thats all I am going to say about that haha

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