C Programming - Functions - Discussion

Discussion Forum : Functions - Find Output of Program (Q.No. 15)
15.
What will be the output of the program?
#include<stdio.h>

int addmult(int ii, int jj)
{
    int kk, ll;
    kk = ii + jj;
    ll = ii * jj;
    return (kk, ll);
}

int main()
{
    int i=3, j=4, k, l;
    k = addmult(i, j);
    l = addmult(i, j);
    printf("%d, %d\n", k, l);
    return 0;
}
12, 12
7, 7
7, 12
12, 7
Answer: Option
Explanation:

Step 1: int i=3, j=4, k, l; The variables i, j, k, l are declared as an integer type and variable i, j are initialized to 3, 4 respectively.

The function addmult(i, j); accept 2 integer parameters.

Step 2: k = addmult(i, j); becomes k = addmult(3, 4)

In the function addmult(). The variable kk, ll are declared as an integer type int kk, ll;

kk = ii + jj; becomes kk = 3 + 4 Now the kk value is '7'.

ll = ii * jj; becomes ll = 3 * 4 Now the ll value is '12'.

return (kk, ll); It returns the value of variable ll only.

The value 12 is stored in variable 'k'.

Step 3: l = addmult(i, j); becomes l = addmult(3, 4)

kk = ii + jj; becomes kk = 3 + 4 Now the kk value is '7'.

ll = ii * jj; becomes ll = 3 * 4 Now the ll value is '12'.

return (kk, ll); It returns the value of variable ll only.

The value 12 is stored in variable 'l'.

Step 4: printf("%d, %d\n", k, l); It prints the value of k and l

Hence the output is "12, 12".

Discussion:
33 comments Page 2 of 4.

Subhojit said:   9 years ago
Its all matter of return type.

Amu said:   10 years ago
What it will return a value of 'l' only?

Sonam said:   10 years ago
How 11 came?

Manjunath said:   1 decade ago
Will compiler accepts multiple values in return statement? isn't raises error there?

Pavan said:   1 decade ago
How the value stored in k?

Jhansi said:   1 decade ago
How can we return two values in the return statement?

Jagan said:   1 decade ago
How do they say the k value is 12 ?

Sachin said:   1 decade ago
Basically, the return statement is from right to left calling pattern because a function can't return double value at a time without using pointer. So the compiler would always take the right value as a result.

$tRiKeR said:   1 decade ago
@Potnuru.

#include<stdio.h>

int main()
{
printf("India", "BIX\n");
return 0;
}

Then what is the output of this program if your comma operator has left to right then BIX will be output but by indiabix it is Indis then who is correct ?

Devam said:   1 decade ago
@potnuru.

Thanks for nice explanation........


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