Compilare: main.cpp: In function 'int main()': main.cpp:21:74: warning: unused variable 'ifinalr' [-Wunused-variable] int matR[102][102], matJ[102][102], n, m, i, j, k, istartr, jstartr, ifinalr, jfinalr, iactual, jactual, istartj, jstartj, ifinalj, jfinalj; ^~~~~~~ main.cpp:21:83: warning: unused variable 'jfinalr' [-Wunused-variable] int matR[102][102], matJ[102][102], n, m, i, j, k, istartr, jstartr, ifinalr, jfinalr, iactual, jactual, istartj, jstartj, ifinalj, jfinalj; ^~~~~~~ main.cpp:21:128: warning: unused variable 'ifinalj' [-Wunused-variable] int matR[102][102], matJ[102][102], n, m, i, j, k, istartr, jstartr, ifinalr, jfinalr, iactual, jactual, istartj, jstartj, ifinalj, jfinalj; ^~~~~~~ main.cpp:21:137: warning: unused variable 'jfinalj' [-Wunused-variable] int matR[102][102], matJ[102][102], n, m, i, j, k, istartr, jstartr, ifinalr, jfinalr, iactual, jactual, istartj, jstartj, ifinalj, jfinalj; ^~~~~~~ main.cpp:107:30: warning: 'jmn' may be used uninitialized in this function [-Wmaybe-uninitialized] g<<mn<<" "<<imn<<" "<<jmn; ^ main.cpp:107:22: warning: 'imn' may be used uninitialized in this function [-Wmaybe-uninitialized] g<<mn<<" "<<imn<<" "<<jmn; ^~~