- Write a program that subtracts the value 15 from 87 and displays the result, together with an appropriate message, at the terminal.
#include <stdio.h>
int main ()
{
int x ,y , z;
x = 87;
y = 15;
z = x - y;
printf("The difference between %d and %d is %d", x, y, z);
return 0;
}
2. Identify the syntactic errors in the following program. Then type in and run the corrected program to ensure you have correctly identified all the mistakes.
#include
printf ("The answer is %i\n" sum);
return 0;
}
Answer
#include <stdio.h>
int main (void)
{
int sum;
/* COMPUTE RESULTS */
sum = 25 + 37 - 19;
/*display results;*/
printf("The result is %i\n", sum);
return 0;
}
3. What output might you expect from the following program?
#include <stdio.h>
answer = 100;
result = answer - 10;
printf ("The result is %i\n", result + 5); return 0;
return 0;
}
Answer
The result is 95
4. Which of the following are invalid variable names? Why?
Int char 6_05
Calloc Xx alpha_beta_routine
floating _1312 z
ReInitialize _ A$
Answer
Int char 6_05 - Invalid Because space is not a valid character
Calloc Xx alpha_beta_routine -Invalid Because space is not a valid character
floating _1312 z -Invalid Because space is not a valid character
ReInitialize _ A$- Invalid Because $ is not a valid character in variable name
5. Which of the following are invalid constants? Why?
123.456 0x10.5 0X0G1
0001 0xFFFF 123L
0Xab05 0L -597.25
123.5e2 .0001 +12
98.6F 98.7U 17777s
0996 -12E-12 07777
1234uL 1.2Fe-7 15,000
1.234L 197u 100U
0XABCDEFL 0xabcu +123
Answer
0x10.5: Invalid, because the 'x' is not a valid hexadecimal digit.
0X0G1: Invalid, because 'G' is not a valid hexadecimal digit
17777s: Invalid, 's' is not a valid suffix for a numeric constant
17777s: Invalid, 's' is not a valid suffix for a numeric constant
1.2Fe-7: Invalid, 'Fe' is not a valid part of a floating-point constant.
15,000: Invalid, commas are not allowed in numeric constants
6.What output would you expect from the following program?
#include <stdio.h>
}
Answer
d=d
7. Convert given value in Meter to centimeter.
Answer
#include <stdio.h>
int main()
{
int x,y;
printf("\nEnter the meter value : ");
scanf("%i", &x);
y= x*100;
printf("The centimeter value is %i cm", y);
return 0;
}
8. Calculate the volume of a cylinder. PI * r2h
Answer
#include <stdio.h>
#define PI 3.142
int main()
{
float r, h;
printf("\nEnter the radius : ");
scanf("%f", &r);
printf("\nEnter the height : ");
scanf("%f", &h);
printf("\nVolume is %f", PI*r*r*h);
return 0;
}
9. Calculate average marks of 4 subjects which, entered separately.
#include <stdio.h>
int main()
{
float mark1, mark2, mark3, mark4, total, average;
printf("\nEnter the subject 1 mark : ");
scanf("%f", &mark1);
printf("\nEnter the subject 2 mark : ");
scanf("%f", &mark2);
printf("\nEnter the subject 3 mark : ");
scanf("%f", &mark3);
printf("\nEnter the subject 4 mark : ");
scanf("%f", &mark4);
total = mark1+mark2+mark3+mark4;
average = total/4;
printf("\nAverage is %.2f", average);
return 0;
}
10. Convert the given temperature in Celsius to Fahrenheit. T(°F) = T(°C) × 1.8 + 32
#include <stdio.h>
int main()
{
float Tc, Tf;
printf("\nEnter temparature in celsius : ");
scanf("%f",&Tc);
Tf = (Tc*1.8)+32;
printf("\nTemperature in fahrenheit is %.2f", Tf);
return 0;
}
#include <stdio.h>
int main()
{
float x, y;
x = 5.23;
y = 3.5*x +5;
printf("\nValue of y is %.2f", y);
return 0;
}
#include <stdio.h>
int main()
{
float a, b;
a= 10.50;
b= 5*a;
printf("\nCostprice of 5 items is %.2f", b);
return 0;
}
#include <stdio.h>
int main()
{
char n[10];
float h, w, bmi;
printf("\nEnter the name : ");
scanf("%s", n);
printf(" \nEnter the height : ");
scanf("%f", &h);
printf(" \nEnter the weight : ");
scanf("%f", &w);
bmi = w/(h*h);
printf("\n%s's BMI is %.2fKg", n, bmi);
return 0;
}
14.Write a program that converts inches to centimeters. For example, if the user enters 16.9 for a Length in inches, the output would be 42.926cm. (Hint: 1 inch = 2.54 centimeters.)
#include <stdio.h>
int main()
{
float i, c;
printf("\nEnter the value in inches : ");
scanf("%f", &i);
c = i*2.54;
printf("\nThe centimeter value is %.2fcm", c);
return 0;
}
15. The figure gives a rough sketch of a running track. It includes a rectangular shape and two semi-circles. The length of the rectangular part is 67m and breadth is 21m. Calculate the distance of the running track
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#include <stdio.h>
int main()
{
const float pi = 3.142;
int l;
float r, d;
l = 67;
r = 21/2;
d = (2*l)+(2*pi*r);
printf("\nThe distance if the running track is %.2fm", d);
return 0;
}
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