Code below swaps two numbers without using a third variable # include<stdio.h> int swap(int* a, int *b){ // swapping values using match trick *a = *a + *b; *b = *a - *b; *a = *a - *b; return 0; } int main(){ int a, b; printf("Enter two numbers"); scanf("%d %d", &a, &b); printf("a=%d, b=%d", a, b); swap(&a, &b); printf("a=%d, b=%d", a, b); return 0; } Output: Enter two numbers 10 34 before swapping a=10, b=34 After swapping a=34, b=10
To add two numeric values in C #include<stdio.h> int main(){ float a, b; printf("Enter two numbers\n"); scanf("%f %f",&a,&b); printf("sum of %f and %f is %f",a,b,a+b); return 0; } Output: Enter two numbers 12 34 sum of 12.000000 and 34.000000 is 46.000000
Following program will add two Integer numbers for you. // file Addition.java import java.io.*; class Addition{ public static void main(String args[]) throws IOException{ int a,b; BufferedReader br=new BufferedReader(new InputStreamReader(System.in)); System.out.println("Enter first integer"); a=Integer.parseInt(br.readLine()); System.out.println("Enter second integer"); b=Integer.parseInt(br.readLine()); System.out.println("Sum of two integers is: "+(a+b)); } } To run the above code navigate to the source code folder from cmd(Windows) or terminal(Linux) then type the following code to compile javac <filename>.java after sucessfully compiling, type java Addition to start the programe. ...