Decision Table Testing Next Date C Program

#include <stdio.h> #include <stdbool.h> #define YEAR_MIN 1900 #define YEAR_MAX 2100 int month[]={0,31,28,31,30,31,30,31,31,30,31,30,31}; bool isLeapYear(int y) { return ((y % 400 == 0) || (y % 4 == 0 && y % 100 != 0)); } bool isNotValid(int d, int m, int y) { return (d <= 0 || d > month[m] || m < 0 || m > 12 || y < YEAR_MIN || y > YEAR_MAX); } void test(int d, int m, int y) { int d1 = d, m1= m, y1 = y; if(isLeapYear(y)) { month[2] = 29; } else { month[2] = 28; } if(isNotValid(d,m,y)) { printf("%d\t%d\t%d\t%s\n",d1,m1,y1,"Not a valid date"); } else { d++; if(d > month[m]) { d = 1; m++; } if(m > 12) { m = 1; y++; } printf("%d\t%d\t%d\t%d/%d/%d\n",d1,m1,y1,d,m,y); } } int main(void) { test(0,0,1899); test(0,0,1900); test(0,3,1899); test(0,3,1900); test(20,0,1899); test(20,0,1900); test(20,3,1899); test(20,3,1900); return 0; }

STQA Decision Table in C Pogram