Math functions.
ADDITION: #include<stdio.h> main() { int a = 100; int b = 2; int c; c=a+b; printf("The sum of given value is: %d",c); } MULTIPLICATION: #include<stdio.h> main() { int a = 100; int b = 2; int c; c=a*b; printf("The sum of given value is: %d",c); }