1. Shut Down Computer
#include <stdio.h>
#include <stdlib.h>
int main( )
{
system('C:\\WINDOWS\\System32\\shutdown /s');
return 0;
}
Warning :- This will shutdown your pc. If you want to try this code, first close all the running tab and then run this program.
2. Check Leap Year
#include <stdio.h>
int main()
{
int y;
printf("Enter year: ");
scanf("%d",&y);
if(y % 4 == 0)
{
//Nested if else
if( y % 100 == 0)
{
if ( y % 400 == 0)
printf("%d is a Leap Year", y);
else
printf("%d is not a Leap Year", y);
}
else
printf("%d is a Leap Year", y );
}
else
printf("%d is not a Leap Year", y);
return 0;
}
Output :-
Enter year: 2021
2021 is not a Leap Year
3. Get Current Date and Time
#include<stdio.h>
#include<time.h>
int main()
{
printf("\n\n\t\tAnonymous\n\n\n");
time_t t; // not a primitive datatype
time(&t);
printf("\nThis program has been writeen at (date and time): %s", ctime(&t));
return 0;
}
Output :-
Anonymous
This program has been writeen at (date and time): Sat Apr 24 19:58:46 2021
4. Calculate Student Grade
/* C program to Find Grade of a Student */
#include <stdio.h>
int main()
{
int english, chemistry, computers, physics, maths;
float Total, Percentage;
printf(" Please Enter the Five Subjects Marks : \n");
scanf("%d%d%d%d%d", &english, &chemistry, &computers, &physics, &maths);
Total = english + chemistry + computers + physics + maths;
Percentage = (Total / 500) * 100;
printf(" Total Marks = %.2f\n", Total);
printf(" Marks Percentage = %.2f", Percentage);
if(Percentage >= 90)
{
printf("\n Grade A");
}
else if(Percentage >= 80)
{
printf("\n Grade B");
}
else if(Percentage >= 70)
{
printf("\n Grade C");
}
else if(Percentage >= 60)
{
printf("\n Grade D");
}
else if(Percentage >= 40)
{
printf("\n Grade E");
}
else
{
printf("\n Fail");
}
return 0;
}
Output :-
Please Enter the Five Subjects Marks :
90
85
86
76
75
Total Marks = 412.00
Marks Percentage = 82.40
Grade B
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