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C program to read an integer and print its multiplication table

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Question

Using while or do while loop: wap to read any integer number and print its multiplication table

Answer/Solution

In this program, we are reading an integer number and printing its multiplication table, we are implementing the program using for, while and do while (through all loops).

Logic

• Read an integer number
• Take a loop counter and initialize it with 1
• Run a loop from 1 to 10
• Print the multiplication of input number and loop counter
• Increase the loop counter

Complete program using while loop

#include <stdio.h>
int main()
{
	int num; 	/*to store number*/
	int i;	/*loop counter*/
	
	/*Reading the number*/
	printf("Enter an integer number: ");
	scanf("%d",&num);
	
	/*Initialising loop counter*/
	i=1;
	
	/*loop from 1 to 10*/
	while(i<=10){
		printf("%d\n",(num*i));
		i++; /*Increase loop counter*/
	}
	
	return 0;
}

Output

Enter an integer number: 12 
12
24
36
48
60
72
84
96
108
120 

Code using do while loop

/*Initialising loop counter*/
i=1;

/*loop from 1 to 10*/
do{
	printf("%d\n",(num*i));
	i++; /*Increase loop counter*/
}while(i<=10);

Code using for loop

for(i=1;i<=10;i++){
	printf("%d\n",(num*i));
}

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