Programming Essentials in C: Chapter 3 Assignment (CLA) Exam Answers

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1. What happens if you try to compile and run this program?

    #include  
    int main(void) { 
        int i, j, k; 
        i = -1; 
        j = 1; 
        if(i) 
        	j--; 
        if(j) 
        	i++; 
        k = i * j; 
        printf("%d",k); 
        return 0; 
    }

the program outputs2
the program outputs -1
the program outputs 1
the program outputs 0

2. What happens if you try to compile and run this program?

    #include <stdio.h> 
    int main(void) { 
        int i, j, k; 
        i = 0; 
        j = 0; 
        if(j) 
        	j--; 
        else 
        	i++; 
        if(i) 
        	i--; 
        else 
        	j++; 

        k = i + j; 
        printf("%d",k); 
        return 0; 
    }

the program outputs 2
the program outputs -1
the program outputs 0
the program outputs 1

3. What happens if you try to compile and run this program?

    #include <stdio.h> 
    int main(void) { 
        int i, j, k; 
        i = 2; 
        j = 3; 
        if(j) 
        	j--; 
        else if(i) 
        	i++; 
        else 
        	j++; 
        if(j) 
        	i--; 
        else if(j) 
        	j++; 
        else 
        	j = 0; 
        k = i + j; 
        printf("%d",k); 
        return 0; 
    }

the program outputs 3
the program outputs 1
the program outputs 2
the program outputs 0

4. What happens if you try to compile and run this program?

    #include <stdio.h> 
    int main(void) { 
        double x = -.1; 
        int i = x; 
        printf("%d",i); 
        return 0; 
    }

the program outputs -0.100000
the program outputs -1
the program outputs 0.100000
the program outputs 0

5. What happens if you try to compile and run this program?

    #include <stdio.h> 
    int main(void) { 
        float x,y; 
        int i,j; 
        x = 1.5; y = 2.0; 
        i = 2; j = 3; 
        x = x * y + i / j; 
        printf("%f",x); 
        return 0; 
    }

the program outputs 3.000000
the program outputs 2.000000
the program outputs 1.000000
the program outputs 0.000000

6. What happens if you try to compile and run this program?

    #include <stdio.h> 
    int main(void) { 
        float x,y; 
        int i,j; 
        x = 1.5; y = 2.0; 
        i = 2; j = 4; 
        x = x * y + (float)i / j; 
        printf("%f",x); 
        return 0; 
    }

the program outputs 2.000000
the program outputs 3.000000
the program outputs 4.000000
the program outputs 3.500000

7. What happens if you try to compile and run this program?

    #include <stdio.h> 
    int main(void) { 
        int i; 
        i = 1; 
        while(i < 16) 
        	i *= 2; 
        printf("%d",i); 
        return 0; 
    }

the program outputs 32
the program outputs 4
the program outputs 16
the program outputs 8

8. What happens if you try to compile and run this program?

    #include <stdio.h> 
    int main(void) { 
        int i, j; 
        i = 1; j = 1; 
        while(i < 16) { 
        	i += 4; 
        	j++; 
        } 
        printf("%d",j); 
        return 0; 
    }

the program outputs 4
the program outputs 7
the program outputs 5
the program outputs 6

9. What happens if you try to compile and run this program?

    #include <stdio.h> 
    int main(void) { 
        int i = 7, j = i - i; 
        while(i) { 
        	i /= 2; 
        	j++; 
        } 
        printf("%d",j); 
        return 0; 
    }

the program outputs 3
the program outputs 2
the program outputs 1
the program outputs 0

10. What happens if you try to compile and run this program?

    #include <stdio.h> 
    int main(void) { 
        int i = 7, j = i - i; 
        while(!i) { 
        	i /= 2; 
        	j++; 
        } 
        printf("%d",j); 
        return 0; 
    }

the program outputs 1
the program outputs 0
the program outputs 2
the program outputs 3

11. What happens if you try to compile and run this program?

    #include <stdio.h> 
    int main(void) { 
        int i, j = 1; 
        for(i = 11; i > 0; i /= 3) 
        	j++; 
        printf("%d",j); 
        return 0; 
    }

the program outputs 3
the program outputs 5
the program outputs 4
the program outputs 2

12. What happens if you try to compile and run this program?

    #include <stdio.h> 
    int main(void) { 
        int i, j = 0; 
        for(i = 0; !i ; i++) 
        	j++; 
        printf("%d",j); 
        return 0; 
    }

the program outputs 1
the program outputs 3
the program outputs 0
the program outputs 2

13. What happens if you try to compile and run this program?

    #include <stdio.h> 
    int main(void) { 
        int i = 1, j = -2; 
        for(;;) { 
        	i *= 3; 
        	j++; 
        	if(i > 30) 
        		break; 
        } 
        printf("%d",j); 
        return 0; 
    }

the program outputs 3
the program outputs 1
the program outputs 0
the program outputs 2

14. What happens if you try to compile and run this program?

    #include <stdio.h> 
    int main(void) { 
        int i = 1, j = -2, k; 
        k = (i >= 0) && (j >= 00) || (i <= 0) && (j <= 0); 
        printf("%d",k); 
        return 0; 
    }

the program outputs 3
the program outputs 2
the program outputs 0
the program outputs 1

15. What happens if you try to compile and run this program?

    #include <stdio.h> 
    int main(void) { 
        int i = 1, j = -2, k; 
        k = (i >= 0) || (j >= 00) && (i <= 0) || (j <= 0); 
        printf("%d",k); 
        return 0; 
    }

the program outputs 1
the program outputs 3
the program outputs 0
the program outputs 2

16. What happens if you try to compile and run this program?

    #include <stdio.h> 
    int main(void) { 
        int i = 1, j = -2, k; 
        k = !(i >= 0) || !(j >= 00) && !(i <= 0) || !(j <= 0); 
        printf("%d",k); 
        return 0; 
    }

the program outputs 0
the program outputs 1
the program outputs 2
the program outputs 3

17. What happens if you try to compile and run this program?

    #include <stdio.h> 
    int main(void) { 
        int i = 1, j = 0, k; 
        k = i & j; 
        k |= !!k; 
        printf("%d",k); 
        return 0; 
    }

the program outputs 1
the program outputs 2
the program outputs 0
the program outputs 3

18. What happens if you try to compile and run this program?

    #include <stdio.h> 
    int main(void) { 
        int i = 1, j = 0, k; 
        k = !i | j; 
        k = !k; 
        printf("%d",k); 
        return 0; 
    }

the program outputs 2
the program outputs 0
the program outputs 1
the program outputs 3

19. What happens if you try to compile and run this program?

    #include <stdio.h> 
    int main(void) { 
        int i = 1, j = 0, k; 
        k = (i ^ j) + (!i ^ j) + (i ^ !j) + (!i ^ !j); 
        printf("%d",k); 
        return 0; 
    }

the program outputs 1
the program outputs 2
the program outputs 3
the program outputs 0

20. What happens if you try to compile and run this program?

    #include <stdio.h> 
    int main(void) { 
        int i = 0, j = 1, k; 
        k = i << j + j << i; 
        printf("%d",k); 
        return 0; 
    }

the program outputs 0
the program outputs 2
the program outputs 3
the program outputs 1