Assignment 4, C (gcc)

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//gcc 5.4.0
//HAVE TO MANUALLY DO IT EACH TIME IN REALITY THIS WOULD NOT HAPPEN
#include  <stdio.h>

int main(void)
{
    long long a;
    long long b;
    long long c;
    long long d;
    int year;
    scanf("%lld %lld", &a , &b);
    c=a;
        d=b;
    a*=b;
    
    printf("multiplication is %lld\n", a);    
    
    cd=

scanf("%d", &year);
    if(((year % 4 == 0) && (year % 100 != 0)) || (year % 400 == 0)) {
    printf("It is a leapyear");
       }
       else
       {
           printf("It is not a leapyear");
       }
    return 0;
}

//Multiplication of the large number by the small number.  
//Addition of the large number by the small number.  
//Subtraction of the large number by the small number.  
//Division of the large number by the small number.  
//Compute the square root of each number
//Compute the cubic root of each number
//The reminder of the division of the large number by the small number.  
//write the day of the year
//for assignment 3 leap year use the NOT symbol/exclamation when talking about leap years

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Compilation time: 0.14 sec, absolute running time: 0.24 sec, cpu time: 0.17 sec, memory peak: 3 Mb, absolute service time: 0,45 sec