Formatted I/O allows you to format the input or output data in a specific style using conversion specifiers.
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printf()– for formatted output.scanf()– for formatted input.
Example:
#include <stdio.h>
int main() {
float num = 3.14159;
printf("Formatted float: %.2f\n", num); // Outputs: 3.14
return 0;
}Unformatted I/O:
Unformatted I/O does not use format specifiers. It works on raw data like characters and strings.
Functions:
Example:
#include <stdio.h>
int main() {
char ch;
char name[30];
printf("Enter a character: ");
ch = getchar(); // Unformatted input
putchar(ch); // Unformatted output
printf("\nEnter your name: ");
gets(name); // Unsafe, use fgets() in modern code
puts(name); // Outputs string with newline
return 0;
}Note: gets() is considered unsafe and has been removed from the latest C standards. Use fgets() instead.