arrays

arrays.h

int isum(int a[],int s){
	int i,sum=0;
	for(i=0;i<s;i++){
		sum+=a[i];
	}
	return sum;
}

double dsum(double a[],int s){
	int i;
	double sum=0.0;
	for(i=0;i<s;i++){
		sum+=a[i];
	}
	return sum;
}

double iaverage(int a[],int s){
	return (double)(isum(a,s)/(double)(s));
}

double daverage(double a[],int s){
	return (dsum(a,s)/(double)(s));
}

int imax(int a[],int s){
	int mx;
	mx = a[0];
	int i;
	for(i=1;i<s;i++){
		if(a[i]>mx)
			mx = a[i];
	}
	return mx;
}

double dmax(double a[],int s){
	double mx;
	mx = a[0];
	int i;
	for(i=1;i<s;i++){
		if(a[i]>mx)
			mx = a[i];
	}
	return mx;
}

int imin(int a[],int s){
	int mn;
	mn = a[0];
	int i;
	for(i=1;i<s;i++){
		if(a[i]<mn)
			mn = a[i];
	}
	return mn;
}

double dmin(double a[],int s){
	double mn;
	mn = a[0];
	int i;
	for(i=1;i<s;i++){
		if(a[i]<mn)
			mn = a[i];
	}
	return mn;
}

void isort(int a[],int s,int v){
	int i,j,tmp;
	for(i=0;i<s;i++){
		for(j=i+1;j<s;j++){
			if(v==0){
				if(a[i]<a[j]){
					tmp = a[i];
					a[i] = a[j];
					a[j] = tmp;
				}
			}else{
				if(a[i]>a[j]){
					tmp = a[i];
					a[i] = a[j];
					a[j] = tmp;
				}
			}
		}
	}
}

void dsort(double a[],int s,int v){
	int i,j;
	double tmp;
	for(i=0;i<s;i++){
		for(j=i+1;j<s;j++){
			if(v==0){
				if(a[i]<a[j]){
					tmp = a[i];
					a[i] = a[j];
					a[j] = tmp;
				}
			}else{
				if(a[i]>a[j]){
					tmp = a[i];
					a[i] = a[j];
					a[j] = tmp;
				}
			}
		}
	}
}

int isearch(int a[],int s,int k){
	int i;
	for(i=0;i<s;i++){
		if(a[i]==k)
			return i;
	}
	return -999;
}

int dsearch(double a[],int s,double k){
	int i;
	for(i=0;i<s;i++){
		if(a[i]==k)
			return i;
	}
	return -999;
}

test.c

#include<stdio.h>
#include "arrays.h"

int main(int argc, char const *argv[])
{
	int a[10] = {8,9,7,6,3,4,2,1,5,10};
	double d[10] = {10.1,19.5,5.6,4.5,7.8,8.6,9.8,7.5,102.0,100.1};
	int i;
	printf("Initial integer array:\n");
	for(i=0;i<10;i++){
		printf("%d ", a[i]);
	}
	printf("\n");
	printf("Initial double array:\n");
	for(i=0;i<10;i++){
		printf("%lf ", d[i]);
	}
	printf("\nisum: %d\n",isum(a,10));
	printf("dsum: %lf\n",dsum(d,10));
	printf("iaverage: %lf\n",iaverage(a,10));
	printf("daverage: %lf\n",daverage(d,10));
	printf("imax: %d\n",imax(a,10));
	printf("dmax: %lf\n",dmax(d,10));
	printf("imin: %d\n",imin(a,10));
	printf("dmin: %lf\n",dmin(d,10));
	isort(a,10,0);
	printf("integer array sorted in decreasing order:\n");
	for(i=0;i<10;i++){
		printf("%d ", a[i]);
	}
	dsort(d,10,0);
	printf("\ndouble array sorted in decreasing order:\n");
	for(i=0;i<10;i++){
		printf("%lf ", d[i]);
	}
	printf("\nPosition of 5 in integer array: %d\n", isearch(a,10,5));
	printf("\nPosition of 10.6 in double array: %d\n", dsearch(d,10,10.6));
	return 0;
}