Given date output is the day of the week

UINT32 i_32u = 1990u, j_u32 = 0u, Year_flag = 0u, year_day_u32 = 0u, sum_day_u32 = 0u, weekday_u32 = 0u;for (i_32u = 1990 U i_32u <= year_u32; i_32u++) {Year_flag = Is_leap_year (year_u32), if (1u = = Year_flag) {year_day_u32 = 366u;} Else{year_day_u32 = 365u;} Switch (mouth_u32-1u) {case 1u:sum_day_u32 + = 31u;break;case 2u:sum_day_u32 + 31u + 28u + year_flag;break;case 3u:sum_da Y_u32 + + 31u + 28u + year_flag + 31u;break;case 4u:sum_day_u32 + + 31u + 28u + year_flag + 31u + 30u;break;case 5u:sum_day_ U32 + + 31u + 28u + year_flag + 31u + 30u + 31u;break;case 6u:sum_day_u32 + + 31u + 28u + year_flag + 31u + 30u + 31u + 30u; Break;case 7u:sum_day_u32 + + 31u + 28u + year_flag + 31u + 30u + 31u + 30u + 31u;break;case 8u:sum_day_u32 + + 31u + 28u +  Year_flag + 31u + 30u + 31u + 30u + 31u + 31u;break;case 9u:sum_day_u32 + + 31u + 28u + year_flag + 31u + 30u + 31u + 30u + 31u + 31u + 30u;break;case 10u:sum_day_u32 + + 31u + 28u + year_flag + 31u + 30u + 31u + 30u + 31u + 31u + 30u + 31u;break ; Case 11u:sum_day_u32 + + 31u + 28u + year_flag + 31u + 30u + 31u + 30u + 31u + 31u + 30u + 31u + 30u;break;default:break;}} Sum_day_u32 + = Day_u32;weekday_u32 = sum_day_u32% 7u + 3;if (weekday_u32! = 0u) {(void) osm_printf ("%d%d months%d days is the week%d\n", year _u32, Mouth_u32, Day_u32, weekday_u32);} else{(void) osm_printf ("%d-%d-month-%d-day is Sunday \ n", Year_u32, Mouth_u32, day_u32);} */}

This code is too water, and then think of a way, and this will be the problem is not correctly output the date of the correct date,

So I think of the good number of 1990, should be January 1, 1990 to do well is Monday

So I tidied up the code and wrote a better function.

UINT32 Week (UINT32 year_u32, UINT32 mouth_u32, UINT32 day_u32) {UINT32 day_code = 0u; UINT32 i32i = 0u; UINT32 U32_j = 0u; UINT32 Year_flag = 0u; UINT32 days = 0u; UINT32 i32_sum = 0u; UINT32 mouth[12] = {30u, 28u, 31u, 30u, 31u, 30u, 31u, 31u, 30u, 31u, 30u, 31u};if (Mouth_u32 < 1u) | | (Mouth_u32 > 12u) | | (Day_u32 > 31u) | | (Year_u32 < 1990u)) {(void) osm_printf ("Input incorrect Data");} Else{for (i32i = 1990u; i32i < year_u32; i32i++) {Year_flag = Is_leap_year (YEAR_U32); if (1u = = Year_flag) {days + = 366 U }else{days + = 365u;}} for (i32i = 0u; i32i < (MOUTH_U32-1U), i32i++) {days + = mouth[i32i];} U32_j = days% 7u;switch (u32_j) {case 0u: (void) osm_printf ("Sunday \ n"); Break;case 1u: (void) osm_printf ("Monday \ n"); break;case 2u: (void) osm_printf ("Tuesday \ n"), break;case 3u: (void) osm_printf ("Wednesday \ n"); Break;case 4u: (void) osm_printf ("Thursday \ n"); Break;case 5u: (void) osm_printf ("Friday \ n"); Break;case 6u: (void) osm_printf ("Saturday \ n"); break;default:break;} }return 0u;}

So there's a benchmark that looks good.

Given date output is the day of the week