Syntax

#include <stdio.h>

int main(){

    int a,b;
    printf("Enter two numbers: ");
    scanf("%d %d", &a, &b);

    printf("\nSum:%d ", a+b);

    return 0;
}
////////////////////////////////////////////////////////////////////////////////////////////////////////////
#include <stdio.h>

int main() {
    int x;
    float num;
    char text[20];
    scanf("%d %f %s", &x, &num, text);

    //Typing 10 22.5 abcd and then pressing Enter assigns 10 to x, 22.5 to num, and abcd to text.
}
//////////////////////////////////////////////////////////////////////////////////////////////////////////////
#include <stdio.h>

int main() {
    printf("Color: %s, Number: %d, float: %5.2f \n", "red", 42, 3.14159);
    /* Color: red, Number: 42, float:  3.14  */

    printf("Pi = %3.2f \n", 3.14159);
    /* Pi = 3.14 */

    printf("Pi = %8.5f \n", 3.14159);
    /* Pi = 3.14159 */

    printf("Pi = %-8.5f \n", 3.14159);
    /* Pi = 3.14159 */

    printf("There are %d %s in the tree. \n", 22, "apples");
    /* There are 22 apples in the tree. */
}
/////////////////////////////////////////////////////////////////////////////////////////////////////////////
#include <stdio.h>

int main(){

int a;
printf("Enter a number: ");
scanf("%d", &a);

printf("\nThe number you entered is: %d", a);

if (a > 4)
    printf("\nThe number is bigger than four");
else
    printf("\nThe number is less than four");
return 0;
}
////////////////////////////////////////////////////////////////////////////////////////////////////////////////
#include <stdio.h>

int SumOfNumbers(int a, int b){
    int sum;
    sum = a + b;
    return sum;
}


int main(){

    int a,b;
    printf("Enter two numbers: ");
    scanf("%d %d", &a, &b);

    int sum = SumOfNumbers(a,b);
    printf("%d\n", sum);

return 0;
}