writing data to a file in c code example

Example 1: write a binary file c

FILE *write_ptr;

write_ptr = fopen("test.bin","wb");  // w for write, b for binary

fwrite(buffer,sizeof(buffer),1,write_ptr); // write 10 bytes from our buffer

Example 2: file in C

//to open a file
FILE=*fp;
fp=fopen("one.txt", "w");
//to close file 
fclose(fp);