Telesab

Question1:
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
 //readln func that deals with the precistion
int readln(char s[], int maxlen) {
    char ch;
    int i;
    int chars_remain;
    i = 0;
    chars_remain = 1;

   int x=0;
    int z=0;
    while (chars_remain) {
        ch = getchar();
        if (isdigit(ch) || ch == '.' || ch == '\n') {

        if ((ch == '\n') || (ch == EOF)) {
                chars_remain = 0;
            }

        if (ch == '.') {
            if (x <= 3) {
                s[i] = ch;
                i++;
                continue;
            }
            else {
                printf("Output: error; numbers before [.] exceeds 3 digits.");
            z = 1;
                break;
            }
        }

        else if (i < maxlen - 1) {
            s[i] = ch;
            i++;

            if (ch != '.')
                x++;

        }

        }
        else {
            printf("Only digits and positive numbers are allowed");
            break;
        }
        }
    if (!z) {
        s[i] = '\0';
        return i;
    }
    else {
        i = -1;
        return i;
    }
}
int main(int argc, char** argv) {
    char [12] number;
    double In;
    int result;
    int integer;
    printf("Input/\n");
    readln(number,12);
// since the value is in string i've to convert it into decimal using strod fun
    if (result >0) {
        In = strtod(number,NULL);
        In= In * (22 / 7);
        printf("Output/ %.8f \n", In);
        //checking whether it is even or odd
        integer = In;
        if (integer % 2 == 0) {
            printf("%d is even \n", integer);
            --integer;
            if (integer - 3 != 0) {
                int mod = 10 % (integer - 3);
                printf("result:%d \n", mod);
            }
            else
                printf("Error Can't Devide by Zero!");
    }
    else
            printf("%d odd \n", integer);
    }


    return 0;
}

Question2:
#include <stdio.h>
#include <stdlib.h>

int main(int argc, char** argv) {
	char name[6];
	char letter;
	char age[10];
	int num;
	char sec[10];
	int Snum;

	printf("Input/\n");
	printf("Name:\n");
	gets(name);
	printf("Favorite letter:\n");
	letter = getchar();
	printf("Age:\n");
	fgets(age, 10, stdin);
	num = atoi(age);
	printf("Secret number:\n");
	fgets(sec,10, stdin);
	Snum = atoi(sec);
	printf("Output/\n");
	if ((letter == 'A') && (num == 24 || num == 25 || num == 26 || num == 27) && (Snum == 123456))

		printf("Access granted:");
		printf("Name %s, Favorite letter: %c, Age: %d, Secret Number %d", name, letter, num, Snum);
	return 0;
}