C Formatted IO Functions

#include <stdio.h> //header file section
int main()
{
int a, b, c;
printf("Enter the value of a = ");
scanf("%d",&a) ; //read value a through keyboard
printf("\nEnter the value of b = ");
scanf("%d",&b); //read value b through keyboard
c = a + b;
printf("\na + b = %d ",c); //Print the sum of two value a and b
return 0;
}

#include <stdio.h> //header file section
int main()
{
printf("\n%.2s","abcdefg ");
printf("\n%.3s","abcdefg ");
printf("\n%.4s","abcdefg ");
printf("\n%.5s","abcdefg ");
printf("\n%.6s","abcdefg ");
return 0;
}

#include <stdio.h> //header file section
int main()
{
float a, b, c, d;
printf("Enter three float numbers:\n ");
scanf("\n %f %f %f ",&a,&b,&c);
d = (a + b + c)/3;
printf("\nAverage of given number is %f ",d);
return 0;
}