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Return
value of printf() function in C
Ans:
A
function always returns a value and printf function returns the number of
characters successfully printed.
main()
{
int s=1;
printf("%d",printf("%d %d %d", s,s,s));
}
{
int s=1;
printf("%d",printf("%d %d %d", s,s,s));
}
In
this above program the inner printf is first called which prints value of s,
three times with space between each value, 1 1 1.
Total
5 characters get printed = 3 values and 2 spaces).
As
explained earlier the inner printf after printing the values, returns the
number of characters printed, 5 which is printed by the outer printf.
The
output of the above program is
1 1 1 5
