I have a problem that I have to mount a vector ( vet2[50] ) with the sum of a large vector ( vet1[100] ), this vector vet1 is provided by the user and the sum is given by:
vet2[0]=vet1[0]+vet1[1]
vet2[1]=vet1[2]+vet1[3]
.
.
.
vet2[49]=vet1[98]+vet1[99]
I can not establish a logic to do this sum, if the vectors were smaller would give to do manual (method above), but as they are large I am half lost.
You need to loop and vary the index by the loop variable.
I made an example with 6 numbers, but just switch to 100 on the second line. Do not put an odd value that will give problem.
I started the vectors by zeroing them, I made a loop to read all items, then I made the summation loop and finally the loop showing the result.
In the sum loop I have created each element of the second vector by adding the equivalent elements according to the formula apparently requested in the question (it is not easy to do something without a formula definition, but I am confident that this is what you want) p>
For an exercise I think it feels good.
#include <stdio.h>
#define MAX 6
int main(void) {
int vet1[MAX];
int vet2[MAX / 2];
for (int i = 0; i < MAX; i++) {
scanf("%d", &vet1[i]);
}
for (int i = 0; i < MAX / 2; i++) {
vet2[i] = vet1[i * 2] + vet1[i * 2 + 1];
}
for (int i = 0; i < MAX / 2; i++) {
printf("%d\n", vet2[i]);
}
}
See working on ideone and C ++ Shell >.