Random c programming coding

Odd or Even

#include < stdio.h >
main()
{
int n;
printf("Enter an integer\n");
scanf("%d",&n);
if ( n%2 == 0 )
printf("Even\n");
else
printf("Odd\n");
return 0;
}


Greatest of 3 numbers

#include < stdio.h >
void main()
{
int a,b,c;
printf("enter any three numbers:\n");
scanf("%d%d%d",&a, &b, &c);
if(a>b&&a>c)
printf("greatest number is: %d",a);
else if(b>c)
printf("greatest number is: %d",b);
else
printf("greatest number is: %d",c);
}


Swapping two numbers

#include < stdio.h >
int main()
{
int x, y, temp;
printf("Enter the value of x and y\n");
scanf("%d%d", &x, &y);
printf("Before Swapping\nx = %d\ny = %d\n",x,y);
temp = x;
x = y;
y = temp;
printf("After Swapping\nx = %d\ny = %d\n",x,y);
return 0;
}


Nested If Else

#include < stdio.h >
void main()
{
int marks;
printf("Enter your marks : ");
scanf("%d",&marks);
if(marks>100)
/*marks greater than 100*/
printf("Not valid marks");
else if(marks>=80)
/*marks between 80 & 99*/
printf("your grade is A");
else if(marks >=70)
/*marks between 70 & 79*/
printf("your grade is B");
else if(marks>=50)
/*marks between 50 & 69*/
printf("your grade is C");
else if(marks>=35)
/*marks between 35 & 49*/
printf("your grade is D");
else
/*marks less than 35*/
printf("your grade is E");
}


Calculate percentage

#include < stdio.h >
void main()
{
int s1, s2, s3, s4, s5, sum, total = 500;
float per;
printf("\nEnter marks of 5 subjects : ");
scanf("%d %d %d %d %d", &s1, &s2, &s3, &s4, &s5);
sum = s1 + s2 + s3 + s4 + s5;
printf("\nSum : %d", sum);
per = (sum * 100)/500;
/* percentage formula*/
printf("\nPercentage : %f", per);
}


Calculate Gross salary

#include < stdio.h >
void main()
{
int gross_salary, basic, da, ta;
printf("Enter basic salary : ");
scanf("%d", &basic);
da = (10 * basic)/100;
ta = (12 * basic)/100;
gross_salary = basic + da + ta;
printf("\nGross salary : %d",gross_salary);
}


Simple interest

#include < stdio.h >
void main()
{
int amount, rate, time, ans;
printf("\nEnter Principal Amount : ");
scanf("%d", &amount);
printf("\nEnter Rate of Interest : ");
scanf("%d", &rate);
printf("\nEnter Period of Time : ");
scanf("%d", &time);
ans = (amount * rate * time)/100;
/*Simple interest formula*/
printf("\nSimple Interest : %d",ans);
}


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