Question

​​​​​​ C Programming Language

The operation of multiplication for positive integers can be expressed as: A.B=2 1 A for (A+[A.(B-1)] B=1 for B>1 Task 1 (for 1 point) is to write a program that will read and print on the screen the values of two integers (A and B) given by user as command line parameters. Task 2 (for 1 point) is to write a program that will calculate the result of the multiplication of two integers. It should print on the screen the values of multiplier (A), multiplicand (B) and the product. Calculation must be performed using recursive function. The numbers A and B should be given by user as command line parameters Task 3 (for 1 point) is to write a program that will calculate the result of the multiplication of two integers using iteration technique (repeated addition i.e. the second factor indicates how many times the f first actor occurs in repeated addition). It should print on the screen the values of multiplier (A), multiplicand (B), the intermediate results of the repeated addition and the product of the multiplication. The numbers A and B should be given by user as command line parameters. • One source code file (login name lab2c.c) should contain all the three tasks. • Divide your program into as many functions as possible. • Check the data types for all the functions you use. Check your program for correctness of intermediate results and do not leave it to the last moment!

Answer 1

1 task program:

#include <stdio.h>

int main(int argc, char *argv[])
{
int A,B;
if(argc<2)
{
printf("enter 2 arguments");
return 0;
}

/*reading values into A and B*/
A=atoi(argv[1]);
B=atoi(argv[2]);
printf("A = %d\nB = %d",A,B);
  
return 0;
}

sample input:

/a.out 12 34

output:

A = 12 B = 34

2task program:

#include <stdio.h>
int product(int A, int B)
{
if(A<B)
{
return product(B,A);
}
else if(B!=0)
{
return (A+product(A,B-1));
}
else{
return 0;
}

  
}
int main(int argc, char *argv[])
{
int A,B,result;
if(argc<2)
{
printf("enter 2 arguments");
return 0;
}
A=atoi(argv[1]);
B=atoi(argv[2]);
  
result=product(A,B);
  
printf("%d X %d = %d",A,B,result);
return 0;
}

sample input:

/a.out 7 4

output:

H x 12 = 84

3task program:

#include <stdio.h>
int product(int A,int B)
{
int i,sum=0;
for(i=1;i<=A;i++)
{
sum=sum+B;
printf("%d\t",sum);
}
return sum;
}
int main(int argc, char *argv[])
{
int A,B,result;
if(argc<2)
{
printf("enter 2 arguments");
return 0;
}
A=atoi(argv[1]);
B=atoi(argv[2]);
  
result=product(A,B);
  
printf("\n%d X %d = %d",A,B,result);
return 0;
}
sample input:

/a.out 8 3

9 6 8 X 3 = 24 12 15 18 21 24

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