Eroare de compilare: user.c: In function ‘main’: user.c:7:28: error: ‘r’ undeclared (first use in this function) fin = fopen("adunare.in", r); ^ user.c:7:28: note: each undeclared identifier is reported only once for each function it appears in user.c:8:30: error: ‘w’ undeclared (first use in this function) fout = fopen("adunare.out", w); ^ user.c:10:2: warning: conversion lacks type at end of format [-Wformat=] fscanf(fin,"%l", a); ^ user.c:10:2: warning: too many arguments for format [-Wformat-extra-args] user.c:11:2: warning: conversion lacks type at end of format [-Wformat=] fscanf(fin,"%l", b); ^ user.c:11:2: warning: too many arguments for format [-Wformat-extra-args] user.c:12:2: warning: implicit declaration of function ‘fprinf’ [-Wimplicit-function-declaration] fprinf(fout,"%l", a + b; ^ user.c:12:25: error: expected ‘)’ before ‘;’ token fprinf(fout,"%l", a + b; ^ user.c:17:1: error: expected ‘;’ before ‘}’ token } ^ user.c:10:8: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%l", a); ^ user.c:11:8: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%l", b); ^