C Control Statement Test – 1

1. What will be the output of the following C code?

    #include <stdio.h>
    int main()
    {
        int x = 0;
        if (x++)
            printf("true\n");
        else if (x == 1)
            printf("false\n");
    } 

2. What will be the output of the following C code?

    #include <stdio.h>
    int main()
    {
        if (printf("%d", printf(")))
            printf("We are Happy");
        else if (printf("1"))
            printf("We are Sad");
    } 

3. What will be the output of the following C code?

    #include <stdio.h>
    int main()
    {
        int x = 1;
        if (x > 0)
            printf("inside if\n");
        else if (x > 0)
            printf("inside elseif\n");
    } 

4. What will be the output of the following C code?

    #include <stdio.h>
    int main()
    {
        int x = 0;
        if (x == 1)
            if (x >= 0)
                printf("true\n");
            else
                printf("false\n");
    } 

5. The C statement ""if (a == 1 || b == 2) {}"" can be re-written as ___________

6. What will be the output of the following C code?

    #include <stdio.h>
    int main()
    {
        int x = 0;
        if (x == 1)
            if (x == 0)
                printf("inside if\n");
            else
                printf("inside else if\n");
        else
            printf("inside else\n");
    } 

7. What will be the output of the following C code?

    #include <stdio.h>
    int main()
    {
        int a = 1;
        if (a)
            printf("All is Well ");
            printf("I am Well\n");
        else
            printf("I am not a River\n");
    } 

8. What will be the output of the following C code?

    #include <stdio.h>
    int main()
    {
        int a = 1;
        if (a--)
            printf("True");
            if (a++)
                printf("False");
    } 

9. What will be the output of the following C code?

    #include <stdio.h>
    int main()
    {
        int x = 0;
        if (x == 0)
            printf("true, ");
        else if (x = 10)
            printf("false, ");
        printf("%d\n", x);
    } 

10. Which of the following is an invalid if-else statement?