why this c program is going infinite!!!!!!?

[karthika]

Program is to find no. of days between 2 dates.Logic is to add 1 day to 1 date till it reaches other.#include#includevoid main(){int a,b,c,d,e,f,flag=0;printf("Enter first date");scanf("%d%d%d",&a,&b,&c);printf("Enter second date");scanf("%d%d%d",&d,&e,&f);while(c!=f||b!=e|| a!=d) //If I comment c!=f this program works otherwise it goes infinite!{a++;if((b==4)||(b==6)||(b==9)||(b==11))f =30;else if(b==2){if(d%4==0)f=29;elsef=28;}elsef=31;if(a>f) {b++;a=1;}if(b==13){c++;b=1;}flag++;}printf("%d",f lag);getch();}

[lunatic spikey]

i did this program its to find persons age& hw many days he lived its very simplefirst u substracted the old year from recent yearthan answer*365other line subtract large month to smaller 1 than answer*30than just add the days ok that was mine i wont do ur prob i might get answer 2moro when i go to my class