Cross Pattern Problem

Cross pattern problem in C language

#include<stdio.h>
int main()
{
    int a,b,c,d,e,f;
    printf("Enter the number of rows :");
    //(if the number is odd than row will be row+1)
    scanf("%d",&a);
    if(a%2 == 0){
        a=a;
    }
    else{
        a=a+1;
    }
    for(b=1;b<=a/2;b++){
        for(c=1;c<=b;c++){
            printf(" ");
        }
        for(d=1;d<=b;d++){
        printf("*");
        break;
        }
        for(e=(a-1);e>=2*b-1;e--){
            printf(" ");
        }
        for(f=1;f<=b;f++){
            printf("*");
            break;
        }
        printf("\n");
    }
    for(b=1;b<=a/2;b++){
        for(c=a/2;c>=b;c--){
            printf(" ");
        }
        for(d=1;d<=b;d++){
            printf("*");
            break;
        }
        for(e=1;e<=2*b-1;e++){
            printf(" ");
        }
        for(f=1;f<=b;f++){
            printf("*");
            break;
        }
        printf("\n");
    }
    return 0;
}