#include <stdio.h>
#include <math.h>

main()
{
int a, b, x;

printf("input : ";
scanf("%d%d", &a, &b);

x = pow(a, b);

printf("x = %d\n", x);
}

#include <stdio.h>
#include <math.h>

main()
{
int a;
double x;

printf("input : ");
scanf("%d", &a);

x = sqrt(a);

printf("x = %d\n", x);
}

#include <stdio.h>
#include <math.h>

main()
{
double x, r;

printf("   x          sin(x)          cos(x) tan(x)\n");
for ( x = 0.0 ; x <= 90 ; x = x + 15)
{
r = x * 3.141592 / 180.0;
printf("%6.2f  %12.5f  %12.5f  %12.5f\n", x, sin(r), cos(r), tan(r));
}
}

#include <stdio.h>

main()
{
int a, b, mul = 1;
int n;

printf("input : ");
scanf("%d %d", &a, &b);

for (n = 1 ; n <= b ; n++)
mul = mul * a;

printf("mul = %d\n", mul);
}

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