C or C++ coding of an age calculator

You can calculate your age by  this coding. Or you can use this coding as a age calculator.
If you have  any  easier idea for his program, plz write i in comments.


Coding:
#include<stdio.h>
main()
{
    int a,b,c,d,e,f;
    int dd1,mm1,yy1;
    int dd2,mm2,yy2;
    int dd,mm,yy;
    char azim[4];

    do{printf("Enter birthday dd_mm_yy\t");
    scanf("%d %d %d",&dd1,&mm1,&yy1);

    printf("\nCurrent date dd_mm_yy\t");
    scanf("%d %d %d",&dd2,&mm2,&yy2);

    if(mm2>=mm1)
    {if (dd2>=dd1){yy=yy2-yy1;mm=mm2-mm1;dd=dd2-dd1;}
    else{yy=yy2-yy1;mm=mm2-mm1-1;dd=30+dd2-dd1;}}

    else
    {if(dd2>=dd1){yy=yy2-yy1-1;mm=12-(mm1-mm2);dd=dd2-dd1;}
    else{yy=yy2-yy1-1;mm=11-(mm1-mm2);dd=30+dd2-dd1;}}
    printf("\n%d yrs & %d months %d days old",yy,mm,dd);


    printf("\n\ndo you want to repeat (y/n)? ");
    getch(azim);
    }
    while(azim[0]!='n');





    getch();
}