Welcome to Your Quiz: Aptitude Test C Programming For Intermediate Students Level 2

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1. What will be the output of the program (sample.c) given below if it is executed from the command line?
cmd> sample friday tuesday sunday
/* sample.c */
#include<stdio.h>
int main(int argc, char *argv[])
{
printf("%c", *++argv[2] );
return 0;
}
2. What will be the output of the program?
#include<stdio.h>
#define PRINT(i) printf("%d,",i)
int main()
{
int x=2, y=3, z=4;
PRINT(x);
PRINT(y);
PRINT(z);
return 0;
}
3. Which standard library function will you use to find the last occurance of a character in a string in C?
4. Point out the error in the program?
#include<stdio.h>
int main()
{
struct emp
{
char name[20];
float sal;
};
struct emp e[10];
int i;
for(i=0; i<=9; i++)
scanf("%s %f", e[i].name, &e[i].sal);
return 0;
}
5. If the different command line arguments are supplied at different times would the output of the following program change?
#include<stdio.h>
int main(int argc, char **argv)
{
printf("%d\n", argv[argc]);
return 0;
}
6. Which of the following statements correct about k used in the below statement?
char ****k;
7. Point out the error in the program?
#include<stdio.h>
#include<stdlib.h>
int main()
{
unsigned char;
FILE *fp;
fp=fopen("trial", "r");
if(!fp)
{
printf("Unable to open file");
exit(1);
}
fclose(fp);
return 0;
}
8. What will be the output of the program if value 25 given to scanf()?
#include<stdio.h>
int main()
{
int i;
printf("%d\n", scanf("%d", &i));
return 0;
}
9. What will be the output of the program in 16-bit platform (Turbo C under DOS) ?
#include<stdio.h>
int main()
{
printf("%d, %d, %d", sizeof(3.0f), sizeof('3'), sizeof(3.0));
return 0;
}
10. Even if integer/float arguments are supplied at command prompt they are treated as strings.
11. What will be the output of the program?
#include<stdio.h>
int main()
{
const int i=0;
printf("%d\n", i++);
return 0;
}
12. What will be the output of the program in Turbo-C ?
#include<stdio.h>
int main()
{
int arr[5], i=-1, z;
while(i<5)
arr[i]=++i;
for(i=0; i<5; i++)
printf("%d, ", arr[i]);
return 0;
}
13. What will be the output of the program (sample.c) given below if it is executed from the command line (turbo c under DOS)?
cmd> sample Good Morning
/* sample.c */
#include<stdio.h>
int main(int argc, char *argv[])
{
printf("%d %s", argc, argv[1]);
return 0;
}
14. What will be the output of the program?
#include<stdio.h>
typedef struct error {int warning, err, exception;} ERROR;
int main()
{
ERROR e;
e.err=1;
printf("%d\n", e.err);
return 0;
}
15. A structure can contain similar or dissimilar elements
16. What is output of below program?
#include <stdio.h>
#include <stdlib.h>
int main(int argc, char *argv[]) {
    char temp[20];
    gcvt(23.45, 3, temp);
    printf("%s", temp);
    return 0;
}
17. A pointer union CANNOT be created
18. Data written into a file using fwrite() can be read back using fscanf()
19. What will be the output of the program assuming that the array begins at the location 1002 and size of an integer is 4 bytes?
#include<stdio.h>
int main()
{
int a[3][4] = { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 };
printf("%u, %u, %u\n", a[0]+1, *(a[0]+1), *(*(a+0)+1));
return 0;
}
20. What does the following declaration mean?
int (*ptr)[10];

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Aptitude Test C Programming For Intermediate Students Level 2

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