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“read from command line c” Code Answer’s

command line arguments c

c by xyve on Apr 06 2020 Comment

int main(int argc, char* argv[]){/*...*/}

read from command line c

c by Marton

on Nov 26 2020 Donate Comment

#include <stdio.h>

int main(int argc, char **argv) {
    for (int i = 0; i < argc; ++i) {
        printf("argv[%d]: %s\n", i, argv[i]);
    }
}

/*
	[birryree@lilun c_code]$ ./a.out hello there
	argv[0]: ./a.out
	argv[1]: hello
	argv[2]: there
*/

Source: stackoverflow.com

c read file from command line

c by Marton

on Nov 27 2020 Donate Comment

You can use as your main function:
int main(int argc, char **argv) 

So, if you entered to run your program:
C:\myprogram myfile.txt

argc will be 2
argv[0] will be myprogram
argv[1] will be myfile.txt

To read the file:
FILE *f = fopen(argv[1], "r");

Source: stackoverflow.com

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