{"id":668,"date":"2024-10-19T13:40:23","date_gmt":"2024-10-19T08:10:23","guid":{"rendered":"https:\/\/codexplained.in\/?p=668"},"modified":"2025-11-24T15:35:46","modified_gmt":"2025-11-24T10:05:46","slug":"add-two-numbers","status":"publish","type":"post","link":"https:\/\/codexplained.in\/?p=668","title":{"rendered":"Add Two Numbers"},"content":{"rendered":"
\n#include <stdio.h>\n\nint main() \n{\n    \/\/ Declare variables to store the two numbers and the sum\n    int num1, num2, sum;\n\n    \/\/ Ask the user for input\n    printf("Enter the first number: ");\n    scanf("%d", &num1);\n\n    printf("Enter the second number: ");\n    scanf("%d", &num2);\n\n    \/\/ Calculate the sum of the two numbers\n    sum = num1 + num2;\n\n    \/\/ Display the result\n    printf("The sum of %d and %d is %d\\n", num1, num2, sum);\n\n    return 0;\n}\n\n<\/pre><\/div>\n\n\n
Explanation<\/h2>\n\n\n\n
return 0;<\/code>: This line indicates that the program finished successfully, returning an exit status of 0<\/code>.<\/p>\n\n\n\n
#include <stdio.h><\/code><\/strong>:<\/p>\n\n\n\n
This line includes the standard input-output library, which allows us to use functions like printf<\/code> and scanf<\/code> for output and input, respectively.<\/p>\n\n\n\n
int main()<\/code><\/strong>:<\/p>\n\n\n\n
This line defines the main function, where the execution of the program begins. The int<\/code> indicates that this function will return an integer value.<\/p>\n\n\n\n
Variable Declaration<\/strong>:<\/p>\n\n\n\n
int num1, num2, sum;<\/code>: Here, we declare three integer variables: num1<\/code> and num2<\/code> for storing the user inputs, and sum<\/code> for storing the result of the addition.<\/p>\n\n\n\n
Input from the User<\/strong>:<\/p>\n\n\n\n
printf(\"Enter the first number: \");<\/code>: This line prompts the user to enter the first number.<\/p>\n\n\n\n
scanf(\"%d\", &num1);<\/code>: This line reads an integer input from the user and stores it in the variable num1<\/code>. The &<\/code> operator is used to get the address of the variable where the input will be stored.<\/p>\n\n\n\n
The same two lines are repeated for the second number (num2<\/code>).<\/p>\n\n\n\n
Calculating the Sum<\/strong>:<\/p>\n\n\n\n
sum = num1 + num2;<\/code>: This line adds the two numbers stored in num1<\/code> and num2<\/code>, and stores the result in the variable sum<\/code>.<\/p>\n\n\n\n
Displaying the Result<\/strong>:<\/p>\n\n\n\n
printf(\"The sum of %d and %d is %d\\n\", num1, num2, sum);<\/code>: This line prints the result to the console. The %d<\/code> placeholders are used to insert the integer values of num1<\/code>, num2<\/code>, and sum<\/code> into the string.<\/p>\n\n\n\n
Return Statement<\/strong>:<\/p>\n\n\n\n
OUTPUT<\/h2>\n\n\n\n
Enter the first number: 5
Enter the second number: 7
The sum of 5 and 7 is 12<\/p>\n\n\n\n
<\/p>\n