diff options
| -rw-r--r-- | assignments/22-dec-to-roman.c | 34 | ||||
| -rw-r--r-- | assignments/23-basic-calculator.c | 149 | ||||
| -rw-r--r-- | assignments/24-value-vs-ref.c | 17 | ||||
| -rw-r--r-- | assignments/25-krishnamurti.c | 53 | ||||
| -rw-r--r-- | assignments/27-fac-rec.c | 52 | ||||
| -rw-r--r-- | assignments/28-fib-rec.c | 58 | ||||
| -rw-r--r-- | assignments/29-gcd-rec.c | 49 |
7 files changed, 399 insertions, 13 deletions
diff --git a/assignments/22-dec-to-roman.c b/assignments/22-dec-to-roman.c index 05a9553..e4dbef1 100644 --- a/assignments/22-dec-to-roman.c +++ b/assignments/22-dec-to-roman.c @@ -51,3 +51,37 @@ int main(void) return 0; } +/* +Output: +Set 1: +To convert a decimal number to roman number + +Enter a number: 0 +Invalid input: it must be between 1 and 3999, inclusive. + +Set 2: +To convert a decimal number to roman number + +Enter a number: 123 +CXXIII + +Set 3: +To convert a decimal number to roman number + +Enter a number: 987 +CMLXXXVII + +Set 4: +To convert a decimal number to roman number + +Enter a number: 1234 +MCCXXXIV + +Set 5: +To convert a decimal number to roman number + +Enter a number: 2946 +MMCMXLVI + +*/ + diff --git a/assignments/23-basic-calculator.c b/assignments/23-basic-calculator.c index 203fdf8..3a5aaf0 100644 --- a/assignments/23-basic-calculator.c +++ b/assignments/23-basic-calculator.c @@ -1,23 +1,146 @@ #include <stdio.h> -int menu_option(char *choice) +void read_values(int *a, int *b) { - printf( - "Basic Calculator\n" - "================\n" - "Menu:\n" - " + Add\n" - " - Subtract\n" - " * Multiply\n" - " / Divide\n" - " q Quit\n\n" - ); + printf("Enter two values: "); + scanf("%d%d", a, b); } int main(void) { - char *choice; - menu_option(&choice); + int a, b, c, choice; + for (;;) { + printf("\nEnter:\n1. Addition\n2. Subtraction\n3. Multiplication\n4. Division\n5. Exit\n\n"); + printf("Enter choice: "); + scanf("%d", &choice); + switch (choice) { + case 1: + read_values(&a, &b); + printf("The sum of %d and %d is %d\n", a, b, a + b); + break; + case 2: + read_values(&a, &b); + printf("The difference of %d and %d is %d\n", a, b, a - b); + break; + case 3: + read_values(&a, &b); + printf("The product of %d and %d is %d\n", a, b, a * b); + break; + case 4: + read_values(&a, &b); + if (b == 0) { + printf("Can not divide by zero.\n"); + return 0; + } + printf("The quotient of %d and %d is %d\n", a, b, a / b); + break; + case 5: + printf("\nBye\n\n"); + return 0; + default: + printf("Invalid choice\nPlease choose a valid option given in the menu.\n"); + } + } return 0; } +/* +Output: +=== Set 1 === + +Enter: +1. Addition +2. Subtraction +3. Multiplication +4. Division +5. Exit + +Enter choice: 1 +Enter two values: 123 456 +The sum of 123 and 456 is 579 + +Enter: +1. Addition +2. Subtraction +3. Multiplication +4. Division +5. Exit + +Enter choice: 2 +Enter two values: 789 3456 +The difference of 789 and 3456 is -2667 + +Enter: +1. Addition +2. Subtraction +3. Multiplication +4. Division +5. Exit + +Enter choice: 3 +Enter two values: 78 45 +The product of 78 and 45 is 3510 + +Enter: +1. Addition +2. Subtraction +3. Multiplication +4. Division +5. Exit + +Enter choice: 4 +Enter two values: 12 5 +The quotient of 12 and 5 is 2 + +Enter: +1. Addition +2. Subtraction +3. Multiplication +4. Division +5. Exit + +Enter choice: 5 + +Bye + +=== Set 2 === + +Enter: +1. Addition +2. Subtraction +3. Multiplication +4. Division +5. Exit + +Enter choice: 4 +Enter two values: 1 0 +Can not divide by zero. + +=== Set 3 === + +Enter: +1. Addition +2. Subtraction +3. Multiplication +4. Division +5. Exit + +Enter choice: 0 +Invalid choice +Please choose a valid option given in the menu. + +Enter: +1. Addition +2. Subtraction +3. Multiplication +4. Division +5. Exit + +Enter choice: 5 + +Bye + + + +*/ + diff --git a/assignments/24-value-vs-ref.c b/assignments/24-value-vs-ref.c index 8640792..094db82 100644 --- a/assignments/24-value-vs-ref.c +++ b/assignments/24-value-vs-ref.c @@ -16,6 +16,23 @@ void swap_by_ref(int *a, int *b) int main(void) { + int x, y; + printf("Enter two numbers: "); + scanf("%d%d", &x, &y); + printf("The values are: %d %d\n", x, y); + swap_by_value(x, y); + printf("The values are: %d %d\n", x, y); + swap_by_ref(&x, &y); + printf("The values are: %d %d\n", x, y); return 0; } +/* +Output: +Enter two numbers: 2 3 +The values are: 2 3 +The values are: 2 3 +The values are: 3 2 + +*/ + diff --git a/assignments/25-krishnamurti.c b/assignments/25-krishnamurti.c new file mode 100644 index 0000000..fd3a1ca --- /dev/null +++ b/assignments/25-krishnamurti.c @@ -0,0 +1,53 @@ +#include <stdio.h> + +int fact(int n) +{ + int i, f = 1; + for (i = n; i > 1; i--) f *= i; + return f; +} + +int is_krishnamurti(int n) +{ + int m = n, sum = 0, r; + while (m > 0) { + r = m % 10; + sum += fact(r); + m /= 10; + } + return n == sum; +} + +int main(void) +{ + int n; + printf("To check whether a given number is a Krishnamurti number or not\n\n"); + printf("Enter a number: "); + scanf("%d", &n); + printf("%d is%s a Krishnamurti number.\n", n, is_krishnamurti(n) ? "" : " not"); + return 0; +} + + +/* +Output: +Set 1: +To check whether a given number is a Krishnamurti number or not + +Enter a number: 2 +2 is a Krishnamurti number. + +Set 2: +To check whether a given number is a Krishnamurti number or not + +Enter a number: 145 +145 is a Krishnamurti number. + +Set 3: +To check whether a given number is a Krishnamurti number or not + +Enter a number: 123 +123 is not a Krishnamurti number. + +*/ + diff --git a/assignments/27-fac-rec.c b/assignments/27-fac-rec.c new file mode 100644 index 0000000..13f00d3 --- /dev/null +++ b/assignments/27-fac-rec.c @@ -0,0 +1,52 @@ +#include <stdio.h> + +int fact(int n) +{ + if (n == 0) + return 1; + else + return n * fact(n - 1); +} + +int main(void) +{ + int n; + printf("To calculate the factorial of a given number\n\n"); + printf("Enter a number: "); + scanf("%d", &n); + if (n < 0) { + printf("Invalid input, must be greater than -1\n"); + return 0; + } + printf("%d! = %d\n", n, fact(n)); + return 0; +} + +/* +Output: +Set 1: +To calculate the factorial of a given number + +Enter a number: -1 +Invalid input, must be greater than zero + +Set 2: +To calculate the factorial of a given number + +Enter a number: 0 +0! = 1 + +Set 3: +To calculate the factorial of a given number + +Enter a number: 5 +5! = 120 + +Set 4: +To calculate the factorial of a given number + +Enter a number: 10 +10! = 3628800 + +*/ + diff --git a/assignments/28-fib-rec.c b/assignments/28-fib-rec.c new file mode 100644 index 0000000..6e483a2 --- /dev/null +++ b/assignments/28-fib-rec.c @@ -0,0 +1,58 @@ +#include <stdio.h> + +int fib(int n) +{ + if (n == 1) + return 0; + else if (n == 2) + return 1; + else + return fib(n - 1) + fib(n - 2); +} + +int main(void) +{ + int i,n; + printf("To calculate the Fibonacci Series upto a given number\n\n"); + printf("Enter a number: "); + scanf("%d", &n); + if (n <= 0) { + printf("Invalid input, must be greater than 0\n"); + return 0; + } + printf("The first %d elements of the Fibonacci series: ", n); + for (i = 1; i <= n; i++) { + printf("%d ", fib(i)); + } + printf("\n"); + return 0; +} + +/* +Output: +Set 1: +To calculate the Fibonacci Series upto a given number + +Enter a number: 0 +Invalid input, must be greater than 0 + +Set 2: +To calculate the Fibonacci Series upto a given number + +Enter a number: 5 +The first 5 elements of the Fibonacci series: 0 1 1 2 3 + +Set 3: +To calculate the Fibonacci Series upto a given number + +Enter a number: 10 +The first 10 elements of the Fibonacci series: 0 1 1 2 3 5 8 13 21 34 + +Set 4: +To calculate the Fibonacci Series upto a given number + +Enter a number: 25 +The first 25 elements of the Fibonacci series: 0 1 1 2 3 5 8 13 21 34 55 89 144 233 377 610 987 1597 2584 4181 6765 10946 17711 28657 46368 + +*/ + diff --git a/assignments/29-gcd-rec.c b/assignments/29-gcd-rec.c new file mode 100644 index 0000000..dcf2c90 --- /dev/null +++ b/assignments/29-gcd-rec.c @@ -0,0 +1,49 @@ +#include <stdio.h> + +int gcd(int a, int b) +{ + if (b == 0) + return a; + else + return gcd(b, a % b); +} + +int main(void) +{ + int a, b; + printf("To calculate the Greatest Common Divisor of given two numbers\n\n"); + printf("Enter two numbers: "); + scanf("%d%d", &a, &b); + printf("The GCD of %d and %d is %d\n", a, b, gcd(a, b)); + return 0; +} + +/* +Output: +Set 1: +To calculate the Greatest Common Divisor of given two numbers + +Enter two numbers: 2 3 +The GCD of 2 and 3 is 1 + +Set 2: +To calculate the Greatest Common Divisor of given two numbers + +Enter two numbers: 15 18 +The GCD of 15 and 18 is 3 + +Set 3: +To calculate the Greatest Common Divisor of given two numbers + +Enter two numbers: 16 12 +The GCD of 16 and 12 is 4 + +Set 4: +To calculate the Greatest Common Divisor of given two numbers + +Enter two numbers: 65 91 +The GCD of 65 and 91 is 13 + + +*/ + |