Add Two Numbers C Program

Add Two Numbers in C Program

1) Using Predefined Values:

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#include<stdio.h> #include<conio.h>   Void main() {     int var1, var2, sum;     var1 = 25;     var2 = 36;     sum = var1 + var2;     printf("Sum of Two Numbers:\t %d\n", sum);     }

Expected Output:

Sum of Two Numbers:     61                                                                                                                     

2) Using User Defined Values:

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#include<stdio.h> #include<conio.h> int main() {     int var1, var2, sum;     printf("\nEnter First Number:\t");     scanf("%d", &var1);     printf("\nEnter Second Number:\t");     scanf("%d", &var2);     sum = var1 + var2;     printf("Sum of Two Numbers:\t %d", sum);     printf("\n");     return 0; }

Expected Output:

Enter First Number:30

Enter Second Number: 25

Sum of Two Numbers:       55                                                                                                                   

3) Using Functions in C Programming

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#include<stdio.h> #include<conio.h>   int addition(int r, int s) {     int temp = r + s;     return temp; }   int main() {     int var1, var2, sum;     printf("\nEnter First Number:\t");     scanf("%d", &var1);     printf("\nEnter Second Number:\t");     scanf("%d", &var2);     sum = addition(var1, var2);     printf("Sum of Two Numbers:\t %d", sum);     printf("\n");     return 0; }

   

Expected Output:

Enter First Number:31

Enter Second Number: 25

Sum of Two Numbers:       56