Q:(i) Consider a currency system in which there are notes of seven denominations,
namely, Re. 1, Rs. 2, Rs. 5, Rs. 10, Rs. 50, Rs. 100. If a sum of Rs. N is entered through the keyboard, write a program to
compute the smallest number of notes that will combine to give Rs. N.
#include<stdio.h>
int main()
{
int s=0,a[6]={1,2,5,10,50,100},n;
int i;
printf("Enter Total Amount :\n");
scanf("%d",&n);
for(i=5;i>=0;i--)
{
s=s+n/a[i];
n=n%a[i];
}
printf("Total Notes : %d",s);
return 0;
}
Q: (h) Two numbers are input through the keyboard into two locations C and D. Write a program to interchange the contents of C and D.
#include<stdio.h>
int main()
{
int C, D, t;
printf("Enter value of C: ");
scanf("%d", &C);
printf("Enter value of D: ");
scanf("%d", &D);
printf("\nBefore swapping: C = %d, D = %d\n", C, D);
t = C;
C = D;
D = t;
printf("After swapping: C = %d, D = %d\n", C, D);
return 0;
}
Q:(g) If value of an angle is input through the keyboard, write a program to print all its Trigonometric ratios.
/* C Programming Solved Problems Let us C Yashwant Kanitkar Chapter 2
Q:(g) If value of an angle is input through the keyboard,
write a program to print all its Trigonometric ratios.
*/
#include<stdio.h>
#include<math.h>
#define PI 3.141592
int main()
{
double angle_deg, angle_rad,sin_val, cos_val, tan_val, cosec_val, sec_val, cot_val;
printf("Enter angle in degrees:\n");
scanf("%lf", &angle_deg);
angle_rad = angle_deg * (PI / 180.0);
sin_val = sin(angle_rad);
cos_val = cos(angle_rad);
tan_val = tan(angle_rad);
printf("Trigonometric Ratios for %lf degrees:\n", angle_deg);
printf("sin(%lf) = %lf\n", angle_deg, sin_val);
printf("cos(%lf) = %lf\n", angle_deg, cos_val);
if (fabs(cos_val) < 1e-6)
printf("tan(%lf) = Undefined\n", angle_deg);
else
printf("tan(%lf) = %lf\n", angle_deg, tan_val);
if (fabs(sin_val) < 1e-6)
printf("cosec(%lf) = Undefined\n", angle_deg);
else
printf("cosec(%lf) = %lf\n", angle_deg, 1.0 / sin_val);
if (fabs(cos_val) < 1e-6)
printf("sec(%lf) = Undefined\n", angle_deg);
else
printf("sec(%lf) = %lf\n", angle_deg, 1.0 / cos_val);
if (fabs(tan_val) < 1e-6)
printf("cot(%lf) = Undefined\n", angle_deg);
else
printf("cot(%lf) = %lf\n", angle_deg, 1.0 / tan_val);
return 0;
}
