Home / Tag Archives: prime numbers

Tag Archives: prime numbers

C Program to count prime numbers in given range

This is the program to count total number of Prime numbers with in 1 to specified range  #include<conio.h> long countprime(long a,long k) { long i; for(i=a;i>=2;i--) { if(k%i==0) return 0; } return 1; } void main() { long i,range; long count=1; double x; printf("Enter the range: "); scanf("%ld\n",&range); for(i=3;i<range;i++) { x=sqrt(i); count+=countprime(floor(x),i); } printf("\n Total number of prime numbers are ...

Read More »