Writing to a CSV file in C

Question

My C program generates this data. I need to put it in a CSV file so that it can be used by another program. How can I achieve this?

Student1 Mark1 Mark2 Mark3 Mark4 Mark5 Student2 Mark1 Mark2 Mark3 Mark4 Mark5 Student3 Mark1 Mark2 Mark3 Mark4 Mark5 Student4 Mark1 Mark2 Mark3 Mark4 Mark5 Student5 Mark1 Mark2 Mark3 Mark4 Mark5 

Answer 1

You can achieve this through fprintf

 for(i = 0; i < num_of_students; i++) fprintf(fptr, "%s,%d,%d,%d,%d,%d\n", name, mark1, mark2, mark3, mark4, mark5);