Write a program that finds if a given number is a prime number.|| C Lab Program

 WAP_B02: Write a program that finds if a given number is a prime number...|| Expression Evaluation

Algorithm

start step1: Read number step2: for i := 2 to number/2 step 1 do step3: if number % i = 0 then step4: count := count +1 step5: break step6: if count = 0 then step7: Print "number is prime" step8: else Print "number is not a prime" stop

WAP_B02: C Lab Program

//a given number is a prime number or not #include <stdio.h> int main() {     int number,count=0;     printf("Enter a number: ");     scanf("%d", &number);     for (int i = 2; i<= number/2; i++) {         if (number % i == 0) {             count++;   // Found a divisor, not prime             break;         }     }     if (count == 0) {         printf("%d is a prime number.\n", number);     } else {         printf("%d is not a prime number.\n", number);     }     return 0; }

OUTPUT

Enter a number: 31 31 is a prime number.

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Write a program to prints the result (user input: two integer operands and one operator) || C Lab Program

 WAP_B01: Write a C program, which takes two integer operands and one operator from the user, performs the operation and then prints the result. (Consider the operators +,-,*, /, % and use Switch Statement).|| Expression Evaluation

Algorithm

start step1: Read num1,num2 and operator step2: switch (operator) step3: case '+': result = num1 + num2 step4: Print result step5: case '-': result = num1 - num2 step6: Print result step7: case '*': result = num1 * num2 step8: Print result step9: case '/': if num2 ≠ 0 then step10: result = num1 / num2; step11: Print result step12: else Print "Error: Division by zero is not allowed" step13: case '%': if num2 ≠ 0 then step14: result = num1 % num2; step15: Print result step16: else Print "Error: Division by zero is not allowed" step17:default: Print "invalid operator" step18:end switch stop

WAP_B01: C Lab Program

//takes two integer operands and one operator from the user, performs the operation and then prints the result. (Consider the operators +,-,*, /, % and use Switch Statement). #include <stdio.h> int main() {     int num1, num2, result;     char operator;     // Take input from the user     printf("Enter two numbers: ");     scanf("%d%d", &num1,&num2);     printf("choose an operator (+,-,*,/,%): ");     scanf(" %c", &operator);  // Note the space before %c to consume any whitespace     // Perform the operation based on the operator     switch (operator) {         case '+':             result = num1 + num2;             printf("%d + %d = %d\n", num1, num2, result);             break;         case '-':             result = num1 - num2;             printf("%d - %d = %d\n", num1, num2, result);             break;         case '*':             result = num1 * num2;             printf("%d * %d = %d\n", num1, num2, result);             break;         case '/':             if (num2 != 0) {                 result = num1 / num2;                 printf("%d / %d = %d\n", num1, num2, result);             } else {                 printf("Error: Division by zero is not allowed.\n");             }             break;         case '%':             if (num2 != 0) {                 result = num1 % num2;                 printf("%d %% %d = %d\n", num1, num2, result);             } else {                 printf("Error: Division by zero is not allowed for modulus.\n");             }             break;         default:             printf("Invalid operator\n");             break;     }     return 0; }

OUTPUT

Enter two numbers: 55 3 choose an operator (+,-,*,/,%): % 55 % 3 = 1

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