Eroare de compilare: user.c:1:18: error: cstdio: No such file or directory user.c:2:18: error: vector: No such file or directory user.c:4:21: error: algorithm: No such file or directory user.c:5: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘namespace’ user.c:14: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘<’ token user.c: In function ‘pairup’: user.c:23: error: ‘vector’ undeclared (first use in this function) user.c:23: error: (Each undeclared identifier is reported only once user.c:23: error: for each function it appears in.) user.c:23: error: expected expression before ‘int’ user.c:23: error: ‘i’ undeclared (first use in this function) user.c:23: error: ‘G’ undeclared (first use in this function) user.c:24: warning: left-hand operand of comma expression has no effect user.c: In function ‘main’: user.c:32: warning: implicit declaration of function ‘freopen’ user.c:32: error: ‘stdin’ undeclared (first use in this function) user.c:33: error: ‘stdout’ undeclared (first use in this function) user.c:36: warning: implicit declaration of function ‘scanf’ user.c:36: warning: incompatible implicit declaration of built-in function ‘scanf’ user.c:42: error: ‘G’ undeclared (first use in this function) user.c:44: error: ‘for’ loop initial declarations are only allowed in C99 mode user.c:44: note: use option -std=c99 or -std=gnu99 to compile your code user.c:47: warning: implicit declaration of function ‘memset’ user.c:47: warning: incompatible implicit declaration of built-in function ‘memset’ user.c:48: error: ‘for’ loop initial declarations are only allowed in C99 mode user.c:52: error: ‘for’ loop initial declarations are only allowed in C99 mode user.c:53: warning: implicit declaration of function ‘printf’ user.c:53: warning: incompatible implicit declaration of built-in function ‘printf’ user.c:54: error: redefinition of ‘i’ user.c:52: note: previous definition of ‘i’ was here user.c:54: error: ‘for’ loop initial declarations are only allowed in C99 mode