what does \n and %d mean?
Here, in C programming \n is an escape character that helps to create a new line whereas %d is a format specifier that allows to specify only Integer values.
WAP to input a number and print if it is positive or not.
The following is a program to input a number and print if it is positive or not:
#include <stdio.h> int main() { double num; printf("Enter a number: "); scanf("%lf", &num); if (num <= 0.0) { if (num == 0.0) printf("You entered 0."); else printf("You entered a negative number."); } else printf("You entered a positive number."); return 0; }
Or,
#include <stdio.h> int main() { double num; printf("Enter a number: "); scanf("%lf", &num); if (num < 0.0) printf("You entered a negative number."); else if (num > 0.0) printf("You entered a positive number."); else printf("You entered 0."); return 0; }