C printing the same thing twice-CodePudding

how do i stop this code from printing the same things twice ./run has has instead of it printing

The same arguments have been found has at 1, 2

it prints

The same arguments have been found has at 1, 2
The same arguments have been found has at 2, 1

#include <string.h>

int main(int argc, char *argv[])
{
    int r, k;

    printf("Command Line Arguments: ");
    for (r = 1; r < argc; r  )
    {
        printf("%s ", argv[r]);
    }

    printf("\n");

    for (r = 1; r < argc; r  )
    {
        for (k = 1; k < argc; k  )
        {
            if (r != k && strcmp(argv[r], argv[k]) == 0)
            {
                printf("The same arguments have been found %s at %d, %d\n", argv[r], r, k);
            } 
        }
    }

    return 0;
}

CodePudding user response：

Simple; don't compare an argument to another argument that has already been compared to everything.

Instead of this:

for (k = 1; k < argc; k  )

do this:

for (k = r 1; k < argc; k  )

CodePudding user response：

You code has a bug first

you forgot

#include <stdio.h>

second, the only time it prints twice is when you input two same arguments because of your condition checking

if you input 1, 2, two different arguments

it should only print once